#include <vlc_common.h>
-#include <lua.h> /* Low level lua C API */
-#include <lauxlib.h> /* Higher level C API */
-#include <lualib.h> /* Lua libs */
-
#include "../vlc.h"
#include "../libs.h"
#include "variables.h"
case VLC_VAR_ADDRESS:
vlclua_error( L );
break;
- case VLC_VAR_MUTEX:
- vlclua_error( L );
- break;
default:
vlclua_error( L );
}
case VLC_VAR_ADDRESS:
vlclua_error( L );
break;
- case VLC_VAR_MUTEX:
- vlclua_error( L );
- break;
default:
vlclua_error( L );
}
return 1;
}
+static int vlclua_var_inherit( lua_State *L )
+{
+ vlc_value_t val;
+ vlc_object_t *p_obj;
+ if( lua_type( L, 1 ) == LUA_TNIL )
+ p_obj = vlclua_get_this( L );
+ else
+ {
+ vlc_object_t **pp_obj = luaL_checkudata( L, 1, "vlc_object" );
+ p_obj = *pp_obj;
+ }
+ const char *psz_var = luaL_checkstring( L, 2 );
+
+ int i_type = config_GetType( p_obj, psz_var );
+ if( var_Inherit( p_obj, psz_var, i_type, &val ) != VLC_SUCCESS )
+ return 0;
+
+ lua_pop( L, 2 );
+ return vlclua_pushvalue( L, i_type, val, true );
+}
+
static int vlclua_var_get( lua_State *L )
{
vlc_value_t val;
return 2;
}
-static int vlclua_command( lua_State *L )
-{
- vlc_object_t * p_this = vlclua_get_this( L );
- char *psz_msg;
-
- const char *psz_name = luaL_checkstring( L, 1 );
- const char *psz_cmd = luaL_checkstring( L, 2 );
- const char *psz_arg = luaL_checkstring( L, 3 );
- int ret = var_Command( p_this, psz_name, psz_cmd, psz_arg, &psz_msg );
- lua_pop( L, 3 );
-
- if( psz_msg )
- {
- lua_pushstring( L, psz_msg );
- free( psz_msg );
- }
- else
- {
- lua_pushliteral( L, "" );
- }
- return vlclua_push_ret( L, ret ) + 1;
-}
-
static int vlclua_libvlc_command( lua_State *L )
{
vlc_object_t * p_this = vlclua_get_this( L );
return lua_topointer( L, narg );
}
-typedef struct
-{
- int i_index;
- int i_type;
- lua_State *L;
-} vlclua_callback_t;
-
-static int vlclua_callback( vlc_object_t *p_this, char const *psz_var,
- vlc_value_t oldval, vlc_value_t newval,
- void *p_data )
-{
- vlclua_callback_t *p_callback = (vlclua_callback_t*)p_data;
- lua_State *L = p_callback->L;
-
- /* <empty stack> */
- lua_getglobal( L, "vlc" );
- /* vlc */
- lua_getfield( L, -1, "callbacks" );
- /* vlc callbacks */
- lua_remove( L, -2 );
- /* callbacks */
- lua_pushinteger( L, p_callback->i_index );
- /* callbacks index */
- lua_gettable( L, -2 );
- /* callbacks callbacks[index] */
- lua_remove( L, -2 );
- /* callbacks[index] */
- lua_getfield( L, -1, "callback" );
- /* callbacks[index] callback */
- lua_pushstring( L, psz_var );
- /* callbacks[index] callback var */
- vlclua_pushvalue( L, p_callback->i_type, oldval, false );
- /* callbacks[index] callback var oldval */
- vlclua_pushvalue( L, p_callback->i_type, newval, false );
- /* callbacks[index] callback var oldval newval */
- lua_getfield( L, -5, "data" );
- /* callbacks[index] callback var oldval newval data */
- lua_remove( L, -6 );
- /* callback var oldval newval data */
-
- if( lua_pcall( L, 4, 0, 0 ) )
- {
- /* errormessage */
- const char *psz_err = lua_tostring( L, -1 );
- msg_Err( p_this, "Error while running lua interface callback: %s",
- psz_err );
- /* empty the stack (should only contain the error message) */
- lua_settop( L, 0 );
- return VLC_EGENERIC;
- }
-
- /* empty the stack (should already be empty) */
- lua_settop( L, 0 );
-
- return VLC_SUCCESS;
-}
-
-static int vlclua_add_callback( lua_State *L )
-{
- vlclua_callback_t *p_callback;
- static int i_index = 0;
- vlc_object_t **pp_obj = luaL_checkudata( L, 1, "vlc_object" );
- const char *psz_var = luaL_checkstring( L, 2 );
- lua_settop( L, 4 ); /* makes sure that optional data arg is set */
- if( !lua_isfunction( L, 3 ) )
- return vlclua_error( L );
-
- if( !pp_obj || !*pp_obj )
- return vlclua_error( L );
-
- int i_type = var_Type( *pp_obj, psz_var );
-
- /* Check variable type, in order to avoid PANIC */
- switch( i_type & VLC_VAR_CLASS )
- {
- case VLC_VAR_VOID:
- case VLC_VAR_BOOL:
- case VLC_VAR_INTEGER:
- case VLC_VAR_STRING:
- case VLC_VAR_FLOAT:
- case VLC_VAR_TIME:
- break;
- case VLC_VAR_ADDRESS:
- case VLC_VAR_MUTEX:
- default:
- return vlclua_error( L );
- }
-
- i_index++;
-
- p_callback = (vlclua_callback_t*)malloc( sizeof( vlclua_callback_t ) );
- if( !p_callback )
- return vlclua_error( L );
-
- /* obj var func data */
- lua_getglobal( L, "vlc" );
- /* obj var func data vlc */
- lua_getfield( L, -1, "callbacks" );
- if( lua_isnil( L, -1 ) )
- {
- lua_pop( L, 1 );
- lua_newtable( L );
- lua_setfield( L, -2, "callbacks" );
- lua_getfield( L, -1, "callbacks" );
- }
- /* obj var func data vlc callbacks */
- lua_remove( L, -2 );
- /* obj var func data callbacks */
- lua_pushinteger( L, i_index );
- /* obj var func data callbacks index */
- lua_insert( L, -4 );
- /* obj var index func data callbacks */
- lua_insert( L, -4 );
- /* obj var callbacks index func data */
- lua_createtable( L, 0, 0 );
- /* obj var callbacks index func data cbtable */
- lua_insert( L, -2 );
- /* obj var callbacks index func cbtable data */
- lua_setfield( L, -2, "data" );
- /* obj var callbacks index func cbtable */
- lua_insert( L, -2 );
- /* obj var callbacks index cbtable func */
- lua_setfield( L, -2, "callback" );
- /* obj var callbacks index cbtable */
- lua_pushlightuserdata( L, *pp_obj ); /* will be needed in vlclua_del_callback */
- /* obj var callbacks index cbtable p_obj */
- lua_setfield( L, -2, "private1" );
- /* obj var callbacks index cbtable */
- lua_pushvalue( L, 2 ); /* will be needed in vlclua_del_callback */
- /* obj var callbacks index cbtable var */
- lua_setfield( L, -2, "private2" );
- /* obj var callbacks index cbtable */
- lua_pushlightuserdata( L, p_callback ); /* will be needed in vlclua_del_callback */
- /* obj var callbacks index cbtable p_callback */
- lua_setfield( L, -2, "private3" );
- /* obj var callbacks index cbtable */
- lua_settable( L, -3 );
- /* obj var callbacks */
- lua_pop( L, 3 );
- /* <empty stack> */
-
- /* Do not move this before the lua specific code (it somehow changes
- * the function in the stack to nil) */
- p_callback->i_index = i_index;
- p_callback->i_type = i_type;
- p_callback->L = lua_newthread( L ); /* Do we have to keep a reference to this thread somewhere to prevent garbage collection? */
-
- var_AddCallback( *pp_obj, psz_var, vlclua_callback, p_callback );
- return 0;
-}
-
-static int vlclua_del_callback( lua_State *L )
-{
- vlclua_callback_t *p_callback;
- bool b_found = false;
- vlc_object_t **pp_obj = luaL_checkudata( L, 1, "vlc_object" );
- const char *psz_var = luaL_checkstring( L, 2 );
- lua_settop( L, 4 ); /* makes sure that optional data arg is set */
- if( !lua_isfunction( L, 3 ) )
- return vlclua_error( L );
-
- /* obj var func data */
- lua_getglobal( L, "vlc" );
- /* obj var func data vlc */
- lua_getfield( L, -1, "callbacks" );
- if( lua_isnil( L, -1 ) )
- return luaL_error( L, "Couldn't find matching callback." );
- /* obj var func data vlc callbacks */
- lua_remove( L, -2 );
- /* obj var func data callbacks */
- lua_pushnil( L );
- /* obj var func data callbacks index */
- while( lua_next( L, -2 ) )
- {
- /* obj var func data callbacks index value */
- if( lua_isnumber( L, -2 ) )
- {
- lua_getfield( L, -1, "private2" );
- /* obj var func data callbacks index value private2 */
- if( lua_equal( L, 2, -1 ) ) /* var name is equal */
- {
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- lua_getfield( L, -1, "callback" );
- /* obj var func data callbacks index value callback */
- if( lua_equal( L, 3, -1 ) ) /* callback function is equal */
- {
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- lua_getfield( L, -1, "data" ); /* callback data is equal */
- /* obj var func data callbacks index value data */
- if( lua_equal( L, 4, -1 ) )
- {
- vlc_object_t *p_obj2;
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- lua_getfield( L, -1, "private1" );
- /* obj var func data callbacks index value private1 */
- p_obj2 = (vlc_object_t*)luaL_checklightuserdata( L, -1 );
- if( p_obj2 == *pp_obj ) /* object is equal */
- {
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- lua_getfield( L, -1, "private3" );
- /* obj var func data callbacks index value private3 */
- p_callback = (vlclua_callback_t*)luaL_checklightuserdata( L, -1 );
- lua_pop( L, 2 );
- /* obj var func data callbacks index */
- b_found = true;
- break;
- }
- else
- {
- /* obj var func data callbacks index value private1 */
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- }
- }
- else
- {
- /* obj var func data callbacks index value data */
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- }
- }
- else
- {
- /* obj var func data callbacks index value callback */
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- }
- }
- else
- {
- /* obj var func data callbacks index value private2 */
- lua_pop( L, 1 );
- /* obj var func data callbacks index value */
- }
- }
- /* obj var func data callbacks index value */
- lua_pop( L, 1 );
- /* obj var func data callbacks index */
- }
- if( !b_found )
- /* obj var func data callbacks */
- return luaL_error( L, "Couldn't find matching callback." );
- /* else */
- /* obj var func data callbacks index*/
-
- var_DelCallback( *pp_obj, psz_var, vlclua_callback, p_callback );
- free( p_callback );
-
- /* obj var func data callbacks index */
- lua_pushnil( L );
- /* obj var func data callbacks index nil */
- lua_settable( L, -3 ); /* delete the callback table entry */
- /* obj var func data callbacks */
- lua_pop( L, 5 );
- /* <empty stack> */
- return 0;
-}
-
static int vlclua_trigger_callback( lua_State *L )
{
vlc_object_t **pp_obj = luaL_checkudata( L, 1, "vlc_object" );
*
*****************************************************************************/
static const luaL_Reg vlclua_var_reg[] = {
+ { "inherit", vlclua_var_inherit },
{ "get", vlclua_var_get },
{ "get_list", vlclua_var_get_list },
{ "set", vlclua_var_set },
{ "create", vlclua_var_create },
- { "add_callback", vlclua_add_callback },
- { "del_callback", vlclua_del_callback },
{ "trigger_callback", vlclua_trigger_callback },
- { "command", vlclua_command },
{ "libvlc_command", vlclua_libvlc_command },
{ "inc_integer", vlclua_inc_integer },
{ "dec_integer", vlclua_dec_integer },
projects / vlc / blobdiff