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/*****************************************************************************
* objects.c: Generic lua<->vlc object wrapper
*****************************************************************************
* Copyright (C) 2007-2008 the VideoLAN team
* $Id$
*
* Authors: Antoine Cellerier <dionoea at videolan tod org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <vlc_common.h>
#include <vlc_vout.h>
#include "../vlc.h"
#include "../libs.h"
#include "objects.h"
#include "input.h"
/*****************************************************************************
* Generic vlc_object_t wrapper creation
*****************************************************************************/
static int vlclua_object_release( lua_State *L )
{
vlc_object_t **p_obj = (vlc_object_t **)luaL_checkudata( L, 1, "vlc_object" );
lua_pop( L, 1 );
vlc_object_release( *p_obj );
return 0;
}
static int vlclua_object_find( lua_State *L )
{
lua_pushnil( L );
return 1;
}
static int vlclua_get_libvlc( lua_State *L )
{
libvlc_int_t *p_libvlc = vlclua_get_this( L )->obj.libvlc;
vlc_object_hold( p_libvlc );
vlclua_push_vlc_object( L, p_libvlc );
return 1;
}
static int vlclua_get_playlist( lua_State *L )
{
playlist_t *p_playlist = vlclua_get_playlist_internal( L );
if( p_playlist )
{
vlc_object_hold( p_playlist );
vlclua_push_vlc_object( L, p_playlist );
}
else lua_pushnil( L );
return 1;
}
static int vlclua_get_input( lua_State *L )
{
input_thread_t *p_input = vlclua_get_input_internal( L );
if( p_input )
{
/* NOTE: p_input is already held by vlclua_get_input_internal() */
vlclua_push_vlc_object( L, p_input );
}
else lua_pushnil( L );
return 1;
}
#undef vlclua_push_vlc_object
int vlclua_push_vlc_object( lua_State *L, vlc_object_t *p_obj )
{
vlc_object_t **udata = (vlc_object_t **)
lua_newuserdata( L, sizeof( vlc_object_t * ) );
*udata = p_obj;
if( luaL_newmetatable( L, "vlc_object" ) )
{
/* Hide the metatable */
lua_pushliteral( L, "none of your business" );
lua_setfield( L, -2, "__metatable" );
/* Set the garbage collector if needed */
lua_pushcfunction( L, vlclua_object_release );
lua_setfield( L, -2, "__gc" );
}
lua_setmetatable( L, -2 );
return 1;
}
static int vlclua_get_vout( lua_State *L )
{
input_thread_t *p_input = vlclua_get_input_internal( L );
if( p_input )
{
vout_thread_t *p_vout = input_GetVout( p_input );
vlc_object_release( p_input );
if(p_vout)
{
vlclua_push_vlc_object( L, (vlc_object_t *) p_vout );
return 1;
}
}
lua_pushnil( L );
return 1;
}
static int vlclua_get_aout( lua_State *L )
{
playlist_t *p_playlist = vlclua_get_playlist_internal( L );
if( p_playlist != NULL )
{
audio_output_t *p_aout = playlist_GetAout( p_playlist );
if( p_aout != NULL )
{
vlclua_push_vlc_object( L, (vlc_object_t *)p_aout );
return 1;
}
}
lua_pushnil( L );
return 1;
}
/*****************************************************************************
*
*****************************************************************************/
static const luaL_Reg vlclua_object_reg[] = {
{ "input", vlclua_get_input },
{ "playlist", vlclua_get_playlist },
{ "libvlc", vlclua_get_libvlc },
{ "find", vlclua_object_find },
{ "vout", vlclua_get_vout},
{ "aout", vlclua_get_aout},
{ NULL, NULL }
};
void luaopen_object( lua_State *L )
{
lua_newtable( L );
luaL_register( L, NULL, vlclua_object_reg );
lua_setfield( L, -2, "object" );
}
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