my question is that how i can print company logo on bar-code (it's report name is product labels)

rate of product,product name,barcode icon and product varients already there i just want to add company logo there..
(in red area of report by defult in odoo 8)

how to call company logo in code ... code is

file name is product_label.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<lots>   

<lot-line type="fields" name="id">       

<code type="field" name="code"/>       

<product type="field" name="name"/>       

<variant type="field" name="attribute_value_ids.name"/>       

<price type="field" name="list_price"/>       

ean13 type="field" name="ean13"/>      

  <currency type="field" name="company_id.currency_id.name"/>  

  </lot-line>

</lots>

just tell me how to call company logo there?

(sorry for question i'm new in odoo)