Class c.e.c.CoverGetter(object):

Part of coherence.extern.covers_by_amazon View Source View In Hierarchy

retrieve a cover image for a given ASIN,
                           a TITLE or
                           an ARTIST/TITLE combo

parameters are:

    filename: where to save a received image
              if NONE the image will be passed to the callback
    callback: a method to call with the filename
              or the image as a parameter
              after the image request and save was successful
              can be:
              - only a callable
              - a tuple with a callable,
                  - optional an argument or a tuple of arguments
                  - optional a dict with keyword arguments
    not_found_callback: a method to call when the search at Amazon failed
              can be:
              - only a callable
              - a tuple with a callable,
                  - optional an argument or a tuple of arguments
                  - optional a dict with keyword arguments
    locale:   which Amazon Webservice Server to use, defaults to .com
    image_size: request the cover as large|medium|small image
                resolution seems to be in pixels for
                large: 500x500, medium: 160x160 and small: 75x75
    asin: the Amazon Store Identification Number
    artist: the artists name
    title: the album title

if the filename extension and the received image extension differ,
the image is converted with PIL to the desired format
http://www.pythonware.com/products/pil/index.htm