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/*****************************************************************************
* plugins.c : Dynamic plugin management functions
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
*
* Authors:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*****************************************************************************/
#include <stdlib.h> /* free(), strtol() */
#include <stdio.h> /* sprintf() */
#if defined(SYS_LINUX) || defined(SYS_BSD) || defined(SYS_GNU)
#include <dlfcn.h> /* dlopen(), dlsym(), dlclose() */
#endif
#ifdef SYS_BEOS
#include <image.h>
#endif
#include "plugins.h"
#define PLUGIN_PATH_COUNT 5
int RequestPlugin ( plugin_id_t * p_plugin, char * psz_mask, char * psz_name )
{
int i_count, i_length;
char * psz_plugin;
char * psz_plugin_path[ PLUGIN_PATH_COUNT ] =
{
".",
PLUGIN_PATH,
/* these ones should disappear */
"./audio_output",
"./video_output",
"./interface"
};
i_length = strlen( psz_mask ) + strlen( psz_name );
for ( i_count = 0 ; i_count < PLUGIN_PATH_COUNT ; i_count++ )
{
psz_plugin = malloc( strlen(psz_plugin_path[i_count]) + i_length + 6 );
sprintf( psz_plugin, "%s/%s_%s.so", psz_plugin_path[i_count], psz_mask, psz_name );
#ifdef SYS_BEOS
*p_plugin = load_addon_image( psz_plugin );
#else /* SYS_BEOS */
*p_plugin = dlopen( psz_plugin, RTLD_NOW | RTLD_GLOBAL );
#endif /* SYS_BEOS */
free( psz_plugin );
#ifdef SYS_BEOS
if( *p_plugin >= 0 )
return( 0 );
#else
if( *p_plugin != NULL )
return( 0 );
#endif
}
return( -1 );
}
void TrashPlugin ( plugin_id_t plugin )
{
#ifdef SYS_BEOS
unload_add_on( plugin );
#else
dlclose( plugin );
#endif
}
void * GetPluginFunction ( plugin_id_t plugin, char *psz_name )
{
#ifdef SYS_BEOS
void * p_func;
if( get_image_symbol( plugin, psz_name, B_SYMBOL_TYPE_TEXT, &p_func ) )
return( NULL );
else
return( p_func );
#else
return( dlsym(plugin, psz_name) );
#endif
}