RE: Whats the best way of doing this

Title: Message

I thought something like:-

void write_picture(char *data) {
FILE *fp;
// data write here
}

int main(void)
{
int n, fd[2],child_loop=-1;
pid_t pid;
char vidbuffer[MAXSIZE];
if (pipe(fd) < 0) {
  err_sys("pipe error");
}
if ( (pid = fork()) < 0) {
  err_sys("fork error");
} else {
   while(-1) {
  if (pid > 0) {
   /* parent */

   // close the READ pipe as we dont use it as a parent
   close(fd[0]);

   // usual code here
   // start of loop

   // display function call here
   // write buffer[currentbufferid-1] to pipe

   // end of loop
   // write to the pipe and give it the DIEDIE command ;)
   write(fd[1], "DIEDIE", 6);

   return -1;
  } else {
   /* child */

   // close the WRITE pipe as we dont use it as a child!
   close(fd[1]);

   while(child_loop) {
    // start of infinite loop
    // read from pipe
    // it can either be a) frame data to write to disk or b) DIEDIE cmd
    // if diedie break out of loop and exit
    n=read(fd[0],vidbuffer,MAXSIZE);
    if(vidbuffer[0]=="D") && (vidbuffer[1]=="I") && (vidbuffer[2]=="E") && (vidbuffer[3]=="D") && (vidbuffer[4]=="I") && (vidbuffer[5]=="E") {
     // we got the die command, exit out of loop
     child_loop=0;
    } else {
     // we just got piped a new frame to write to disk (yay!)
     write_picture(vidbuffer);
    }
   }
   // end of loop
   return -1;
  }
   }
}

exit(0);
}

Thanks,
Kind Regards,

Matt Brocklehurst,
LookCCTV.

Tel: 01253 891222
Fax: 01253 891221
Web: www.lookcctv.com
Email: matt@xxxxxxxxxxxx

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