include/vlc_modules.h

   1 /*****************************************************************************
   2  * vlc_modules.h : Module descriptor and load functions
   3  *****************************************************************************
   4  * Copyright (C) 2001-2011 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /**
  25  * \file
  26  * This file defines functions for modules in vlc
  27  */
  28
  29 typedef int (*vlc_activate_t)(void *func, va_list args);
  30 typedef void (*vlc_deactivate_t)(void *func, va_list args);
  31
  32 /*****************************************************************************
  33  * Exported functions.
  34  *****************************************************************************/
  35
  36 VLC_API module_t * vlc_module_load( vlc_object_t *obj, const char *cap, const char *name, bool strict, vlc_activate_t probe, ... ) VLC_USED;
  37 #define vlc_module_load(o,c,n,s,...) \
  38         vlc_module_load(VLC_OBJECT(o),c,n,s,__VA_ARGS__)
  39 VLC_API void vlc_module_unload( module_t *, vlc_deactivate_t deinit, ... );
  40
  41 VLC_API module_t * module_need( vlc_object_t *, const char *, const char *, bool ) VLC_USED;
  42 #define module_need(a,b,c,d) module_need(VLC_OBJECT(a),b,c,d)
  43 VLC_API void module_unneed( vlc_object_t *, module_t * );
  44 #define module_unneed(a,b) module_unneed(VLC_OBJECT(a),b)
  45 VLC_API bool module_exists(const char *) VLC_USED;
  46 VLC_API module_t * module_find(const char *) VLC_USED;
  47
  48 int module_start(vlc_object_t *, const module_t *);
  49 #define module_start(o, m) module_start(VLC_OBJECT(o),m)
  50 void module_stop(vlc_object_t *, const module_t *);
  51 #define module_stop(o, m) module_stop(VLC_OBJECT(o),m)
  52
  53 VLC_API module_config_t * module_config_get( const module_t *, unsigned * ) VLC_USED;
  54 VLC_API void module_config_free( module_config_t * );
  55
  56 VLC_API void module_list_free(module_t **);
  57 VLC_API module_t ** module_list_get(size_t *n) VLC_USED;
  58
  59 VLC_API bool module_provides( const module_t *m, const char *cap );
  60 VLC_API const char * module_get_object( const module_t *m ) VLC_USED;
  61 VLC_API const char * module_get_name( const module_t *m, bool long_name ) VLC_USED;
  62 #define module_GetLongName( m ) module_get_name( m, true )
  63 VLC_API const char * module_get_help( const module_t *m ) VLC_USED;
  64 VLC_API const char * module_get_capability( const module_t *m ) VLC_USED;
  65 VLC_API int module_get_score( const module_t *m ) VLC_USED;
  66 VLC_API const char * module_gettext( const module_t *, const char * ) VLC_USED;
  67
  68 VLC_USED static inline module_t *module_get_main (void)
  69 {
  70     return module_find ("core");
  71 }
  72 #define module_get_main(a) module_get_main()
  73
  74 VLC_USED static inline bool module_is_main( const module_t * p_module )
  75 {
  76     return !strcmp( module_get_object( p_module ), "core" );
  77 }