Filter artwork

For artist/album/song poster type.

resources/lib/artwork.py

@@ -361,8 +361,21 @@ class Artwork(object):
                                     cursor=cursor)
 
     def add_update_art(self, image_url, kodi_id, media_type, image_type, cursor):
-        # Possible that the imageurl is an empty string
-        if image_url:
+
+        ''' Add or update the artwork (if it changed) to the Kodi database. Update the cache if
+            backdrop or poster image_type.
+
+            Possible to an empty imageurl since the process is automated.
+        '''
+        if image_type == 'poster' and media_type in ('song', 'artist', 'album'):
+
+            log.info("skipping poster for songs, artists, albums.")
+            return
+
+        if not image_url:
+
+            log.warn("empty url for: %s/%s", kodi_id, media_type)
+            return
 
         cache_image = False
 
@@ -375,10 +388,10 @@ class Artwork(object):
             "AND type = ?"
         ))
         cursor.execute(query, (kodi_id, media_type, image_type,))
-            try: # Update the artwork
+        try:
             url = cursor.fetchone()[0]
 
-            except TypeError: # Add the artwork
+        except TypeError:
             cache_image = True
             log.debug("Adding Art Link for kodiId: %s (%s)", kodi_id, image_url)
 
@@ -391,12 +404,11 @@ class Artwork(object):
             )
             cursor.execute(query, (kodi_id, media_type, image_type, image_url))
 
-            else: # Only cache artwork if it changed
+        else:
             if url != image_url:
 
                 cache_image = True
 
-                    # Only for the main backdrop, poster
                 if (window('emby_initialScan') != "true" and
                         image_type in ("fanart", "poster")):
                     # Delete current entry before updating with the new one
@@ -415,7 +427,6 @@ class Artwork(object):
                 ))
                 cursor.execute(query, (image_url, kodi_id, media_type, image_type))
 
-            # Cache fanart and poster in Kodi texture cache
         if cache_image and image_type in ("fanart", "poster"):
             self.cache_texture(image_url)