medialibrary: add thumbnail to vlc_ml_genre_t

include/vlc_media_library.h

@@ -295,6 +295,7 @@ typedef struct vlc_ml_genre_t
     int64_t i_id;
     char* psz_name;
     size_t i_nb_tracks;
+    vlc_ml_thumbnail_t thumbnails[VLC_ML_THUMBNAIL_SIZE_COUNT];
 } vlc_ml_genre_t;
 
 typedef struct vlc_ml_media_list_t

modules/misc/medialibrary/entities.cpp

@@ -385,7 +385,24 @@ bool Convert( const medialibrary::IGenre* input, vlc_ml_genre_t& output )
     output.i_id = input->id();
     output.i_nb_tracks = input->nbTracks();
     assert( input->name().empty() == false );
-    return strdup_helper( input->name(), output.psz_name );
+
+    if  ( !strdup_helper( input->name(), output.psz_name ) )
+        return false;
+
+    for (int i = VLC_ML_THUMBNAIL_SMALL; i < VLC_ML_THUMBNAIL_SIZE_COUNT; ++i)
+    {
+        const auto sizeType = static_cast<medialibrary::ThumbnailSizeType>(i);
+        if ( input->hasThumbnail( sizeType ) )
+        {
+            const auto thumbnailMrl = input->thumbnailMrl( sizeType );
+            assert( !thumbnailMrl.empty() );
+
+            if ( !strdup_helper( thumbnailMrl, output.thumbnails[i].psz_mrl )  )
+                    return false;
+        }
+    }
+
+    return true;
 }
 
 bool Convert( const medialibrary::IShow* input, vlc_ml_show_t& output )

src/misc/medialibrary.c

@@ -227,6 +227,7 @@ void vlc_ml_genre_release( vlc_ml_genre_t* p_genre )
 {
     if ( p_genre == NULL )
         return;
+    vlc_ml_thumbnails_release( p_genre->thumbnails );
     free( p_genre->psz_name );
     free( p_genre );
 }