func: static void decode_gray_bitstream(HYuvContext *s, int count)
  
  {
  
      int i;
  
      OPEN_READER(re, &s->gb);
  
      count /= 2;
  
  
  
      if (count >= (get_bits_left(&s->gb)) / (32 * 2)) {
  
          for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) {
  
              READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
  
          }
  
      } else {
  
          for (i = 0; i < count; i++) {
  
              READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0);
  
          }
  
      }
  
      CLOSE_READER(re, &s->gb);
  
  }
  