编写VLC模块时需要配置模块的类别和子类别。
定义文件：https://www.videolan.org/developers/vlc/doc/doxygen/html/vlc__plugin_8h_source.html
/* Categories and subcategories */
#define CAT_INTERFACE 1
#define SUBCAT_INTERFACE_GENERAL 101
#define SUBCAT_INTERFACE_MAIN 102
#define SUBCAT_INTERFACE_CONTROL 103
#define SUBCAT_INTERFACE_HOTKEYS 104
#define CAT_AUDIO 2
#define SUBCAT_AUDIO_GENERAL 201
#define SUBCAT_AUDIO_AOUT 202
#define SUBCAT_AUDIO_AFILTER 203
#define SUBCAT_AUDIO_VISUAL 204
#define SUBCAT_AUDIO_MISC 205
#define SUBCAT_AUDIO_RESAMPLER 206
#define CAT_VIDEO 3
#define SUBCAT_VIDEO_GENERAL 301
#define SUBCAT_VIDEO_VOUT 302
#define SUBCAT_VIDEO_VFILTER 303
#define SUBCAT_VIDEO_SUBPIC 305
#define SUBCAT_VIDEO_SPLITTER 306
#define CAT_INPUT 4
#define SUBCAT_INPUT_GENERAL 401
#define SUBCAT_INPUT_ACCESS 402
#define SUBCAT_INPUT_DEMUX 403
#define SUBCAT_INPUT_VCODEC 404
#define SUBCAT_INPUT_ACODEC 405
#define SUBCAT_INPUT_SCODEC 406
#define SUBCAT_INPUT_STREAM_FILTER 407
#define CAT_SOUT 5
#define SUBCAT_SOUT_GENERAL 501
#define SUBCAT_SOUT_STREAM 502
#define SUBCAT_SOUT_MUX 503
#define SUBCAT_SOUT_ACO 504
#define SUBCAT_SOUT_PACKETIZER 505
#define SUBCAT_SOUT_VOD 507
#define SUBCAT_SOUT_RENDERER 508
#define CAT_ADVANCED 6
#define SUBCAT_ADVANCED_MISC 602
#define SUBCAT_ADVANCED_NETWORK 603
#define CAT_PLAYLIST 7
#define SUBCAT_PLAYLIST_GENERAL 701
#define SUBCAT_PLAYLIST_SD 702
#define SUBCAT_PLAYLIST_EXPORT 703