Interface ArtworkGetByPlaylistItemParams

Parameters for artwork.getByPlaylistItem. Read the picture of a playlist row through the album art manager. A negative playlist means the active playlist and a negative index means the first row. A row past the end, an empty playlist included, fails with NOT_FOUND. A playlist index past the last playlist fails with INVALID_INDEX, a playlistGuid no playlist has with NOT_FOUND, and no active playlist when the active one is meant with NO_ACTIVE_ITEM. A row without the picture is a success with available false; so is a row whose file is only in the cloud and not yet downloaded, which is not opened.