-#define EXT_FILTER_MEDIA 0x01
-#define EXT_FILTER_VIDEO 0x02
-#define EXT_FILTER_AUDIO 0x04
-#define EXT_FILTER_PLAYLIST 0x08
-#define EXT_FILTER_SUBTITLE 0x10
+enum {
+ EXT_FILTER_MEDIA = 0x01,
+ EXT_FILTER_VIDEO = 0x02,
+ EXT_FILTER_AUDIO = 0x04,
+ EXT_FILTER_PLAYLIST = 0x08,
+ EXT_FILTER_SUBTITLE = 0x10,
+};