add OS transcoding extension to ServerInfo output

src/renderer/api/subsonic/subsonic-controller.ts

@@ -1273,6 +1273,10 @@ export const SubsonicController: InternalControllerEndpoint = {
             }
         }
 
+        if (subsonicFeatures[SubsonicExtensions.TRANSCODING]) {
+            features.osTranscodeDecision = [1];
+        }
+
         if (subsonicFeatures[SubsonicExtensions.SONG_LYRICS]) {
             features.lyricsMultipleStructured = [1];
         }

src/shared/api/subsonic/subsonic-types.ts

@@ -456,6 +456,7 @@ export enum SubsonicExtensions {
     INDEX_BASED_QUEUE = 'indexBasedQueue',
     SONG_LYRICS = 'songLyrics',
     TRANSCODE_OFFSET = 'transcodeOffset',
+    TRANSCODING = 'transcoding',
 }
 
 const updatePlaylistParameters = z.object({

src/shared/types/features-types.ts

@@ -7,6 +7,7 @@ export enum ServerFeature {
     LYRICS_SINGLE_STRUCTURED = 'lyricsSingleStructured',
     MUSIC_FOLDER_MULTISELECT = 'musicFolderMultiselect',
     OS_FORM_POST = 'osFormPost',
+    OS_TRANSCODE_DECISION = 'osTranscodeDecision',
     PLAYLISTS_SMART = 'playlistsSmart',
     PUBLIC_PLAYLIST = 'publicPlaylist',
     SERVER_PLAY_QUEUE = 'serverPlayQueue',