#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

main(int argc, char * argv[]) {
   int in,out;
   unsigned short inbuf[3];
   unsigned int outbuf[2];
   int rc;

   while (1) {
      rc = read(STDIN_FILENO, inbuf, sizeof(inbuf));
      if (rc == 0)
         break;
      if (rc != sizeof(inbuf)) {
         printf("input read failed\n");
         exit(1);
      }
#if 0
      outbuf[0] = inbuf[0] | ((inbuf[1] & 077) << 12);
      outbuf[1] = (inbuf[2] << 6) | ((inbuf[1] >> 6) & 077);
#else
      outbuf[0] = (inbuf[0] << 6) | ((inbuf[1] >> 6) & 077);
      outbuf[1] = inbuf[2] | ((inbuf[1] & 077) << 12);
#endif
      if (write(STDOUT_FILENO, outbuf, sizeof(outbuf)) != sizeof(outbuf)) {
         printf("output write failed\n");
         exit(1);
      }
   }
}