public byte[] getStream(){
		 int end;
		 int f_back = size_buffer - 1;

		 for(int i = 0; i < f_back; i ++)
			 formatStream((cont - f_back + i ) % size_buffer);

		 for(end = stream.length - 1; end > 0; end--)
			 if (stream[end] != 0)
				 break;

		 byte [] temp = new byte[end];
		 System.arraycopy(stream, 0, temp, 0, temp.length);

		 return temp;
	 }