[Banshee-List] Automatic Rating

[Brian Lucas <bcl1713 gmail com>]

I would like to do some work or help with work on an extension regarding 
this bug: http://bugzilla.gnome.org/show_bug.cgi?id=419844.  I really 
like the algorithm that Amarok uses for this purpose but I'm not sure if 
it will be implementable in banshee as I'm not sure if the required 
information is retained or available upon track change.  Here is the 
algorithm from Amarok in ruby:

  if( playcount <= 0 ) # not supposed to be less, but what the hell.
      newscore = ( prevscore + percentage ) / 2
  else
      newscore = ( ( prevscore * playcount ) + percentage ) / ( playcount + 1 )
  end


This is not perfect but it does a nice job.  There are other algorithms 
out there to be played with though that also take into account the users 
manual star rating.

What I would really like to know is if the devs think that this will be 
possible with an extension.  Are the proper variables available to an 
extension upon a change of track?  Any information would be greatly 
appreciated.
 Brian