1 /*****************************************************************************
2 * services_discovery.c : Services discovery using lua scripts
3 *****************************************************************************
4 * Copyright (C) 2009 the VideoLAN team
6 * Authors: Fabio Ritrovato <exsephiroth87 at videolan dot org>
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
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21 *****************************************************************************/
27 #include <vlc_common.h>
28 #include <vlc_services_discovery.h>
29 #include <vlc_playlist.h>
34 /*****************************************************************************
36 *****************************************************************************/
37 static void *Run( void * );
39 static const char * const ppsz_sd_options[] = { "sd", NULL };
41 /*****************************************************************************
43 *****************************************************************************/
44 struct services_discovery_sys_t
50 static const luaL_Reg p_reg[] = { { NULL, NULL } };
52 /*****************************************************************************
54 *****************************************************************************/
55 static char *FindFile( vlc_object_t *p_this, const char *psz_name )
57 char *ppsz_dir_list[] = { NULL, NULL, NULL, NULL };
59 vlclua_dir_list( p_this, "sd", ppsz_dir_list );
60 for( ppsz_dir = ppsz_dir_list; *ppsz_dir; ppsz_dir++ )
64 if( asprintf( &psz_filename, "%s"DIR_SEP"%s.lua", *ppsz_dir,
67 vlclua_dir_list_free( ppsz_dir_list );
70 fp = utf8_fopen( psz_filename, "r" );
74 vlclua_dir_list_free( ppsz_dir_list );
79 vlclua_dir_list_free( ppsz_dir_list );
83 /*****************************************************************************
84 * Open: initialize and create stuff
85 *****************************************************************************/
86 int Open_LuaSD( vlc_object_t *p_this )
88 services_discovery_t *p_sd = ( services_discovery_t * )p_this;
89 services_discovery_sys_t *p_sys;
91 char *psz_name = NULL;
93 config_ChainParse( p_sd, "lua-", ppsz_sd_options, p_sd->p_cfg );
94 psz_name = var_CreateGetString( p_sd, "lua-sd" );
95 if( !( p_sys = malloc( sizeof( services_discovery_sys_t ) ) ) )
98 p_sys->psz_filename = FindFile( p_this, psz_name );
99 if( !p_sys->psz_filename )
101 msg_Err( p_sd, "Couldn't find lua services discovery script \"%s\".",
111 msg_Err( p_sd, "Could not create new Lua State" );
112 free( p_sys->psz_filename );
117 luaL_register( L, "vlc", p_reg );
118 lua_pushlightuserdata( L, p_sd );
119 lua_setfield( L, -2, "private" );
125 luaopen_playlist( L );
127 luaopen_strings( L );
128 luaopen_variables( L );
131 if( luaL_dofile( L, p_sys->psz_filename ) )
134 msg_Err( p_sd, "Error loading script %s: %s", p_sys->psz_filename,
135 lua_tostring( L, lua_gettop( L ) ) );
137 free( p_sys->psz_filename );
142 if( vlc_clone (&p_sd->p_sys->thread, Run, p_sd, VLC_THREAD_PRIORITY_LOW) )
144 free( p_sys->psz_filename );
151 /*****************************************************************************
153 *****************************************************************************/
154 void Close_LuaSD( vlc_object_t *p_this )
156 services_discovery_t *p_sd = ( services_discovery_t * )p_this;
158 vlc_join (p_sd->p_sys->thread, NULL);
159 free( p_sd->p_sys->psz_filename );
160 lua_close( p_sd->p_sys->L );
164 /*****************************************************************************
165 * Run: Thread entry-point
166 ****************************************************************************/
167 static void* Run( void *data )
169 services_discovery_t *p_sd = ( services_discovery_t * )data;
170 services_discovery_sys_t *p_sys = p_sd->p_sys;
171 lua_State *L = p_sys->L;
173 lua_getglobal( L, "main" );
174 if( !lua_isfunction( L, lua_gettop( L ) ) || lua_pcall( L, 0, 1, 0 ) )
176 msg_Err( p_sd, "Error while runing script %s, "
177 "function main(): %s", p_sys->psz_filename,
178 lua_tostring( L, lua_gettop( L ) ) );
182 //msg_Info( p_sd, "LuaSD script loaded: %s", p_sd->psz_name );