Braindead plugin that get's the current song's album art url (using MusicBrainz)

configure.ac

@@ -1569,6 +1569,22 @@ AS_IF([test "${enable_audioscrobbler}" != "no"], [
         VLC_ADD_PLUGINS([audioscrobbler])
   ])
 
+dnl
+dnl Musicbrainz plugin
+dnl
+
+enablemusicbrainz=false
+AC_ARG_ENABLE(musicbrainz,
+  [  --enable-musicbrainz    MusicBrainz support (default disabled) ],
+  [if test "${enable_musicbrainz}" = "yes"; then
+      PKG_CHECK_MODULES(MusicBrainz, QtCore QtGui,
+  	[ VLC_ADD_PLUGINS([musicbrainz])
+	  enablemusicbrainz=true
+	  VLC_ADD_LDFLAGS([musicbrainz],[-lmusicbrainz]) ],
+       [AC_MSG_WARN(MusicBrainz library not found)])
+   fi])
+AM_CONDITIONAL(ENABLE_MUSICBRAINZ, test "$enableqt4" = "true")
+
 dnl
 dnl  Input plugins
 dnl

modules/misc/Modules.am

@@ -12,3 +12,4 @@ SOURCES_gnutls = gnutls.c
 SOURCES_svg = svg.c
 SOURCES_profile_parser = profile_parser.c
 SOURCES_audioscrobbler = audioscrobbler.c
+SOURCES_musicbrainz = musicbrainz.c

modules/misc/musicbrainz.c

+/*****************************************************************************
+ * musicbrainz.c
+ *****************************************************************************
+ * Copyright (C) 2006 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Antoine Cellerier <dionoea -at- videolan -dot- org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h>                                      /* malloc(), free() */
+
+#include <vlc/vlc.h>
+#include <vlc/intf.h>
+#include <vlc_meta.h>
+
+#include "musicbrainz/mb_c.h"
+
+
+/*****************************************************************************
+ * intf_sys_t: description and status of log interface
+ *****************************************************************************/
+struct intf_sys_t
+{
+};
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int  Open    ( vlc_object_t * );
+static void Close   ( vlc_object_t * );
+
+static int ItemChange( vlc_object_t *, const char *,
+                       vlc_value_t, vlc_value_t, void * );
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+
+vlc_module_begin();
+    set_category( CAT_INTERFACE );
+    set_subcategory( SUBCAT_INTERFACE_CONTROL );
+    set_shortname( N_( "MusicBrainz" ) );
+    set_description( _("MusicBrainz meta data") );
+
+    set_capability( "interface", 0 );
+    set_callbacks( Open, Close );
+vlc_module_end();
+
+/*****************************************************************************
+ * Open: initialize and create stuff
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+    intf_thread_t *p_intf = (intf_thread_t *)p_this;
+    playlist_t *p_playlist;
+
+    MALLOC_ERR( p_intf->p_sys, intf_sys_t );
+
+    p_playlist = pl_Yield( p_intf );
+    var_AddCallback( p_playlist, "item-change", ItemChange, p_intf );
+    var_AddCallback( p_playlist, "playlist-current", ItemChange, p_intf );
+    pl_Release( p_intf );
+    fprintf(stdout, "POUET POUET\nPOUET POEUT\nPOUET POUET\n" );
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: destroy interface stuff
+ *****************************************************************************/
+static void Close( vlc_object_t *p_this )
+{
+    intf_thread_t *p_intf = (intf_thread_t *)p_this;
+    playlist_t *p_playlist = pl_Yield( p_this );
+
+    var_DelCallback( p_playlist, "item-change", ItemChange, p_intf );
+    var_DelCallback( p_playlist, "playlist-current", ItemChange, p_intf );
+    pl_Release( p_this );
+
+    /* Destroy structure */
+    free( p_intf->p_sys );
+}
+
+/*****************************************************************************
+ * ItemChange: Playlist item change callback
+ *****************************************************************************/
+static int ItemChange( vlc_object_t *p_this, const char *psz_var,
+                       vlc_value_t oldval, vlc_value_t newval, void *param )
+{
+    intf_thread_t *p_intf = (intf_thread_t *)param;
+    char *psz_title = NULL;
+    char *psz_artist = NULL;
+    char *psz_album = NULL;
+    input_thread_t *p_input;
+    playlist_t *p_playlist = pl_Yield( p_this );
+
+    p_input = p_playlist->p_input;
+    pl_Release( p_this );
+
+    if( !p_input ) return VLC_SUCCESS;
+    vlc_object_yield( p_input );
+
+    if( p_input->b_dead || !p_input->input.p_item->psz_name )
+    {
+        /* Not playing anything ... */
+        vlc_object_release( p_input );
+        return VLC_SUCCESS;
+    }
+
+    /* Playing something ... */
+    psz_artist = p_input->input.p_item->p_meta->psz_artist;
+    psz_album = p_input->input.p_item->p_meta->psz_album;
+    psz_title = p_input->input.p_item->psz_name;
+
+    if( psz_artist && psz_album && psz_title )
+    {
+        musicbrainz_t p_mb;
+        char psz_buf[256];
+        char psz_data[256];
+        char i_album_count, i;
+        char *ppsz_args[2];
+
+        fprintf( stdout,"--> %s %s %s\n", psz_artist, psz_album, psz_title );
+        p_mb = mb_New();
+#ifdef WIN32
+        mb_WSAInit( p_mb );
+#endif
+        mb_SetDepth( p_mb, 2 );
+        ppsz_args[0] = psz_album;
+        ppsz_args[1] = NULL;
+        if( !mb_QueryWithArgs( p_mb, MBQ_FindAlbumByName, ppsz_args ) )
+        {
+            mb_GetQueryError( p_mb, psz_buf, 256 );
+            msg_Err( p_intf, "Query failed: %s\n", psz_buf );
+            mb_Delete( p_mb );
+            vlc_object_release( p_input );
+            return VLC_EGENERIC;
+        }
+
+        i_album_count = mb_GetResultInt( p_mb, MBE_GetNumAlbums );
+        if( i_album_count < 1 )
+        {
+            msg_Err( p_intf, "No albums found.\n" );
+            mb_Delete( p_mb );
+            vlc_object_release( p_input );
+            return VLC_EGENERIC;
+        }
+
+        msg_Dbg( p_intf, "Found %d albums.\n", i_album_count );
+
+        for( i = 1; i <= i_album_count; i++ )
+        {
+            mb_Select( p_mb, MBS_Rewind );
+            mb_Select1( p_mb, MBS_SelectAlbum, i );
+
+            mb_GetResultData( p_mb, MBE_AlbumGetAlbumId, psz_data, 256 );
+            mb_GetIDFromURL( p_mb, psz_data, psz_buf, 256 );
+            msg_Dbg( p_intf, "Album Id: %s", psz_buf );
+
+            if( mb_GetResultData( p_mb, MBE_AlbumGetAmazonAsin, psz_buf, 256 ) )
+            {
+                msg_Dbg( p_intf, "Amazon ASIN: %s", psz_buf );
+                msg_Dbg( p_intf, "Album art url: " "http://images.amazon.com/images/P/%s.01._AA240_SCLZZZZZZZ_.jpg", psz_buf );
+                break;
+            }
+        }
+#ifdef WIN32
+        mb_WSAInit( p_mb );
+#endif
+
+        mb_Delete( p_mb );
+
+    }
+
+    vlc_object_release( p_input );
+
+    return VLC_SUCCESS;
+}