1 /*****************************************************************************
2 * vlc.h: VLC specific lua library functions.
3 *****************************************************************************
4 * Copyright (C) 2007-2008 the VideoLAN team
7 * Authors: Antoine Cellerier <dionoea at videolan tod org>
8 * Pierre d'Herbemont <pdherbemont # videolan.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_input.h>
33 #include <vlc_playlist.h>
35 #include <vlc_meta_fetcher.h>
37 #include <vlc_strings.h>
38 #include <vlc_stream.h>
39 #include <vlc_demux.h>
41 #define LUA_COMPAT_MODULE
42 #include <lua.h> /* Low level lua C API */
43 #include <lauxlib.h> /* Higher level C API */
44 #include <lualib.h> /* Lua libs */
45 #if LUA_VERSION_NUM >= 502
46 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
47 #define lua_objlen(L,idx) lua_rawlen(L,idx)
48 #define lua_strlen(L,idx) lua_rawlen(L,idx)
51 /*****************************************************************************
53 *****************************************************************************/
54 int ReadMeta( demux_meta_t * );
55 int FetchMeta( meta_fetcher_t * );
56 int FindArt( meta_fetcher_t * );
58 int Import_LuaPlaylist( vlc_object_t * );
59 void Close_LuaPlaylist( vlc_object_t * );
61 #define TELNETPORT_DEFAULT 4212
62 int Open_LuaIntf( vlc_object_t * );
63 void Close_LuaIntf( vlc_object_t * );
64 int Open_LuaHTTP( vlc_object_t * );
65 int Open_LuaCLI( vlc_object_t * );
66 int Open_LuaTelnet( vlc_object_t * );
69 int Open_Extension( vlc_object_t * );
70 void Close_Extension( vlc_object_t * );
72 int Open_LuaSD( vlc_object_t * );
73 void Close_LuaSD( vlc_object_t * );
75 /*****************************************************************************
77 *****************************************************************************/
78 static inline void lua_Dbg( vlc_object_t * p_this, const char * ppz_fmt, ... )
81 va_start( ap, ppz_fmt );
82 msg_GenericVa( p_this, VLC_MSG_DBG, MODULE_STRING, ppz_fmt, ap );
86 /*****************************************************************************
87 * Functions that should be in lua ... but aren't for some obscure reason
88 *****************************************************************************/
89 static inline bool luaL_checkboolean( lua_State *L, int narg )
91 luaL_checktype( L, narg, LUA_TBOOLEAN ); /* can raise an error */
92 return lua_toboolean( L, narg );
95 static inline int luaL_optboolean( lua_State *L, int narg, int def )
97 return luaL_opt( L, luaL_checkboolean, narg, def );
100 static inline const char *luaL_nilorcheckstring( lua_State *L, int narg )
102 if( lua_isnil( L, narg ) )
104 return luaL_checkstring( L, narg );
107 static inline char *luaL_strdupornull( lua_State *L, int narg )
109 if( lua_isstring( L, narg ) )
110 return strdup( luaL_checkstring( L, narg ) );
114 void vlclua_set_this( lua_State *, vlc_object_t * );
115 #define vlclua_set_this(a, b) vlclua_set_this(a, VLC_OBJECT(b))
116 vlc_object_t * vlclua_get_this( lua_State * );
118 void vlclua_set_playlist_internal( lua_State *, playlist_t * );
119 playlist_t * vlclua_get_playlist_internal( lua_State * );
121 /*****************************************************************************
122 * Lua function bridge
123 *****************************************************************************/
124 #define vlclua_error( L ) luaL_error( L, "VLC lua error in file %s line %d (function %s)", __FILE__, __LINE__, __func__ )
125 int vlclua_push_ret( lua_State *, int i_error );
127 /*****************************************************************************
128 * Will execute func on all scripts in luadirname, and stop if func returns
130 *****************************************************************************/
131 typedef struct luabatch_context_t luabatch_context_t;
132 struct luabatch_context_t
134 input_item_t *p_item;
135 meta_fetcher_scope_t e_scope;
136 bool (*pf_validator)( const luabatch_context_t *, meta_fetcher_scope_t );
139 int vlclua_scripts_batch_execute( vlc_object_t *p_this, const char * luadirname,
140 int (*func)(vlc_object_t *, const char *, const luabatch_context_t *),
142 int vlclua_dir_list( const char *luadirname, char ***pppsz_dir_list );
143 void vlclua_dir_list_free( char **ppsz_dir_list );
144 char *vlclua_find_file( const char *psz_luadirname, const char *psz_name );
146 /*****************************************************************************
147 * Replace Lua file reader by VLC input. Allows loadings scripts in Zip pkg.
148 *****************************************************************************/
149 int vlclua_dofile( vlc_object_t *p_this, lua_State *L, const char *url );
151 /*****************************************************************************
152 * Playlist and meta data internal utilities.
153 *****************************************************************************/
154 void vlclua_read_options( vlc_object_t *, lua_State *, int *, char *** );
155 #define vlclua_read_options( a, b, c, d ) vlclua_read_options( VLC_OBJECT( a ), b, c, d )
156 void vlclua_read_meta_data( vlc_object_t *, lua_State *, input_item_t * );
157 #define vlclua_read_meta_data( a, b, c ) vlclua_read_meta_data( VLC_OBJECT( a ), b, c )
158 void vlclua_read_custom_meta_data( vlc_object_t *, lua_State *,
160 #define vlclua_read_custom_meta_data( a, b, c ) vlclua_read_custom_meta_data( VLC_OBJECT( a ), b, c )
161 int vlclua_playlist_add_internal( vlc_object_t *, lua_State *, playlist_t *,
162 input_item_t *, bool );
163 #define vlclua_playlist_add_internal( a, b, c, d, e ) vlclua_playlist_add_internal( VLC_OBJECT( a ), b, c, d, e )
165 int vlclua_add_modules_path( lua_State *, const char *psz_filename );
168 * File descriptors table
179 int vlclua_fd_init( lua_State *, vlclua_dtable_t * );
180 void vlclua_fd_interrupt( vlclua_dtable_t * );
181 void vlclua_fd_cleanup( vlclua_dtable_t * );
184 * Per-interface private state
191 vlclua_dtable_t dtable;
194 #endif /* VLC_LUA_H */