share/lua/meta/art/00_musicbrainz.lua

   1 --[[
   2  Gets an artwork from the Cover Art Archive or Amazon
   3
   4  $Id$
   5  Copyright © 2007-2010 the VideoLAN team
   6
   7  This program is free software; you can redistribute it and/or modify
   8  it under the terms of the GNU General Public License as published by
   9  the Free Software Foundation; either version 2 of the License, or
  10  (at your option) any later version.
  11
  12  This program is distributed in the hope that it will be useful,
  13  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  GNU General Public License for more details.
  16
  17  You should have received a copy of the GNU General Public License
  18  along with this program; if not, write to the Free Software
  19  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  20 --]]
  21
  22 function descriptor()
  23     return { scope="network" }
  24 end
  25
  26 function try_query(mbid)
  27     local relquery = "http://mb.videolan.org/ws/2/release/" .. mbid
  28     local s = vlc.stream( relquery )
  29     if not s then return nil end
  30     local page = s:read( 65653 )
  31
  32     found, _ = string.find( page, "<artwork>true</artwork>" )
  33     if found then
  34         front, _ = string.find( page, "<front>true</front>" )
  35         if front then
  36             return "http://coverartarchive.org/release/"..mbid.."/front-500"
  37         end
  38     end
  39
  40     -- FIXME: multiple results may be available
  41     _, _, asin = string.find( page, "<asin>(%w+)</asin>" )
  42     if asin then
  43         return "http://images.amazon.com/images/P/"..asin..".01._SCLZZZZZZZ_.jpg"
  44     end
  45     vlc.msg.dbg("Neither coverartarchive.org nor amazon have cover art for this release")
  46     return nil
  47 end
  48
  49 -- Return the mbid for the first release returned by the MusicBrainz search server for query
  50 function get_releaseid(query)
  51     local s = vlc.stream( query )
  52     if not s then return nil end
  53     local page = s:read( 65653 )
  54
  55     -- FIXME: multiple results may be available and the first one is not
  56     -- guaranteed to have asin, so if it doesnt, we wouldnt get any art
  57     _, _, releaseid = string.find( page, "<release id=\"([%x%-]-)\"" )
  58     if releaseid then
  59         return releaseid
  60     end
  61     return nil
  62 end
  63
  64 -- Return the artwork
  65 function fetch_art()
  66     local meta = vlc.item:metas()
  67
  68     if meta["Listing Type"] == "radio"
  69     or meta["Listing Type"] == "tv"
  70     then return nil end
  71
  72     local releaseid = nil
  73
  74     if meta["MB_ALBUMID"] then
  75         releaseid = meta["MB_ALBUMID"]
  76     end
  77
  78     if not releaseid and meta["artist"] and meta["album"] then
  79         query = "artist:\"" .. meta["artist"] .. "\" AND release:\"" .. meta["album"] .. "\""
  80         relquery = "http://mb.videolan.org/ws/2/release/?query=" .. vlc.strings.encode_uri_component( query )
  81         releaseid = get_releaseid( relquery )
  82     end
  83     if not releaseid and meta["artist"] and meta["title"] then
  84         query = "artist:\"" .. meta["artist"] .. "\" AND recording:\"" .. meta["title"] .. "\""
  85         recquery = "http://mb.videolan.org/ws/2/recording/?query=" .. vlc.strings.encode_uri_component( query )
  86         releaseid = get_releaseid( recquery )
  87     end
  88     if releaseid then
  89         return try_query( releaseid )
  90     else
  91         return nil
  92     end
  93 end