1 /*****************************************************************************
2 * plugins.c : Dynamic plugin management functions
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public
19 * License along with this program; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
22 *****************************************************************************/
24 #include <stdlib.h> /* free(), strtol() */
25 #include <stdio.h> /* sprintf() */
27 #if defined(SYS_LINUX) || defined(SYS_BSD) || defined(SYS_GNU)
28 #include <dlfcn.h> /* dlopen(), dlsym(), dlclose() */
37 #define PLUGIN_PATH_COUNT 5
39 int RequestPlugin ( plugin_id_t * p_plugin, char * psz_mask, char * psz_name )
41 int i_count, i_length;
43 char * psz_plugin_path[ PLUGIN_PATH_COUNT ] =
47 /* these ones should disappear */
53 i_length = strlen( psz_mask ) + strlen( psz_name );
55 for ( i_count = 0 ; i_count < PLUGIN_PATH_COUNT ; i_count++ )
57 psz_plugin = malloc( strlen(psz_plugin_path[i_count]) + i_length + 6 );
58 sprintf( psz_plugin, "%s/%s_%s.so", psz_plugin_path[i_count], psz_mask, psz_name );
60 *p_plugin = load_addon_image( psz_plugin );
62 *p_plugin = dlopen( psz_plugin, RTLD_NOW | RTLD_GLOBAL );
70 if( *p_plugin != NULL )
78 void TrashPlugin ( plugin_id_t plugin )
81 unload_add_on( plugin );
87 void * GetPluginFunction ( plugin_id_t plugin, char *psz_name )
92 if( get_image_symbol( plugin, psz_name, B_SYMBOL_TYPE_TEXT, &p_func ) )
97 return( dlsym(plugin, psz_name) );