modules/meta_engine/luameta.c: Get meta (untested) and artwork using lua scripts.

Makefile.am

@@ -424,6 +424,10 @@ VLC-release.app: vlc
 	for i in $(srcdir)/share/luaplaylist/*.* ; do \
 	  $(INSTALL) -m 644 $${i} $(top_builddir)/VLC-release.app/Contents/MacOS/share/luaplaylist/`basename $${i}` ; \
 	done ; \
+	$(INSTALL) -d $(top_builddir)/VLC-release.app/Contents/MacOS/share/luameta
+	for i in $(srcdir)/share/luameta/*.* ; do \
+	  $(INSTALL) -m 644 $${i} $(top_builddir)/VLC-release.app/Contents/MacOS/share/luameta/`basename $${i}` ; \
+	done ; \
 	$(INSTALL) -d $(top_builddir)/VLC-release.app/Contents/MacOS/share/http/dialogs
 	$(INSTALL) -d $(top_builddir)/VLC-release.app/Contents/MacOS/share/http/js
 	$(INSTALL) -d $(top_builddir)/VLC-release.app/Contents/MacOS/share/http/old

configure.ac

@@ -1652,9 +1652,9 @@ then
     ])
   if test "x${have_lua}" = "xyes" ;  then
      AC_DEFINE(HAVE_LUA, [], [Define if you have the lua library])
-     VLC_ADD_PLUGINS([luaplaylist])
-     VLC_ADD_LDFLAGS([luaplaylist],[$LUA_LIBS])
-     VLC_ADD_CFLAGS([luaplaylist],[$LUA_CFLAGS])
+     VLC_ADD_PLUGINS([luaplaylist luameta])
+     VLC_ADD_LDFLAGS([luaplaylist luameta],[$LUA_LIBS])
+     VLC_ADD_CFLAGS([luaplaylist luameta],[$LUA_CFLAGS])
   fi
 fi
 

share/Makefile.am

@@ -245,6 +245,8 @@ DIST_osdmenu_minimal = \
 	osdmenu/minimal/fs_panel_mockup.png
 
 DIST_lua= \
+	luameta/README.txt \
+	luameta/googleimage.lua \
 	luaplaylist/README.txt \
 	luaplaylist/dailymotion.lua \
 	luaplaylist/youtube.lua \

share/luameta/README.txt

+Instructions to code your own VLC Lua meta script.
+$$
+
+Examples: See googleimage.lua .
+
+VLC Lua meta modules should define one of the following functions:
+ * fetch_art(): returns a path to an artwork for the given item
+ * fetch_meta(): returns a table with the following items:
+                .path: the item's full path / URL
+                .name: the item's name in playlist (OPTIONAL)
+                .title: the item's Title (OPTIONAL, meta data)
+                .artist: the item's Artist (OPTIONAL, meta data)
+                .genre: the item's Genre (OPTIONAL, meta data)
+                .copyright: the item's Copyright (OPTIONAL, meta data)
+                .album: the item's Album (OPTIONAL, meta data)
+                .tracknum: the item's Tracknum (OPTIONAL, meta data)
+                .description: the item's Description (OPTIONAL, meta data)
+                .rating: the item's Rating (OPTIONAL, meta data)
+                .date: the item's Date (OPTIONAL, meta data)
+                .setting: the item's Setting (OPTIONAL, meta data)
+                .url: the item's URL (OPTIONAL, meta data)
+                .language: the item's Language (OPTIONAL, meta data)
+                .nowplaying: the item's NowPlaying (OPTIONAL, meta data)
+                .publisher: the item's Publisher (OPTIONAL, meta data)
+                .encodedby: the item's EncodedBy (OPTIONAL, meta data)
+                .arturl: the item's ArtURL (OPTIONAL, meta data)
+                .trackid: the item's TrackID (OPTIONAL, meta data)
+                .options: a list of VLC options (OPTIONAL)
+                          example: .options = { "fullscreen" }
+                .duration: stream duration in seconds (OPTIONAL)
+                .meta: custom meta data (OPTIONAL, meta data)
+                       A .meta field is a table of custom meta categories which
+                       each have custom meta properties.
+                       example: .meta = { ["Google video"] = { ["docid"] = "-5784010886294950089"; ["GVP version"] = "1.1" }; ["misc"] = { "Hello" = "World!" } }
+            Invalid playlist items will be discarded by VLC.
+
+VLC defines a global vlc object with the following members:
+ * vlc.stream_new
+ * vlc.stream_delete
+ * vlc.stream_readline
+ * vlc.stream_read
+ * vlc.msg_dbg( <string> ): print a debug message.
+ * vlc.msg_warn( <string> ): print a warning message.
+ * vlc.msg_err( <string> ): print an error message.
+ * vlc.msg_info( <string> ): print an info message.
+
+Lua scripts are tried in alphabetical order in the user's VLC config
+director luameta/ subdirectory, then in the global VLC luameta/
+directory.
+
+Lua documentation is available on http://www.lua.org .
+VLC uses Lua 5.1
+All the Lua standard libraries are available.

share/luameta/googleimage.lua

+-- Get's an artwork from images.google.com
+-- $Id$
+
+-- Replace non alphanumeric char by +
+function get_query( )
+    if vlc.title then
+        title = vlc.title
+    else
+        title = vlc.name
+    end
+    vlc.msg_dbg( title )
+    return title:gsub( "[^(a-z|A-Z|0-9)]", "+" )
+end
+
+-- Return the artwork
+function fetch_art()
+    fd = vlc.stream_new( "http://images.google.com/images?q=" .. get_query( ) )
+    page = vlc.stream_read( fd, 65653 )
+    vlc.stream_delete( fd )
+    _, _, arturl = string.find( page, "imgurl=([^&]+)" )
+    return arturl
+end