Commit e74515cf authored by Jean-Philippe André's avatar Jean-Philippe André

Lua: new input and input_item facilities

New function vlc.input.item(): returns a pointer to the current input_item

The object returned by vlc.input.item has the following members:
 - item:metas(): similar to vlc.input.metas
 - item:set_meta(name, value): change a meta. Eg: set_meta("artist", "ZZ")
parent 0c0756dd
......@@ -46,6 +46,9 @@
#include "../vlc.h"
#include "../libs.h"
static const luaL_Reg vlclua_input_reg[];
static const luaL_Reg vlclua_input_item_reg[];
input_thread_t * vlclua_get_input_internal( lua_State *L )
{
playlist_t *p_playlist = vlclua_get_playlist_internal( L );
......@@ -202,6 +205,125 @@ static int vlclua_input_add_subtitle( lua_State *L )
return 1;
}
/*****************************************************************************
* Input items
*****************************************************************************/
static input_item_t* vlclua_input_item_get_internal( lua_State *L )
{
input_item_t **pp_item = luaL_checkudata( L, 1, "input_item" );
input_item_t *p_item = *pp_item;
if( !p_item )
luaL_error( L, "script went completely foobar" );
return p_item;
}
/* Garbage collection of an input_item_t */
static int vlclua_input_item_delete( lua_State *L )
{
input_item_t **pp_item = luaL_checkudata( L, 1, "input_item" );
input_item_t *p_item = *pp_item;
if( !p_item )
return luaL_error( L, "script went completely foobar" );
*pp_item = NULL;
vlc_gc_decref( p_item );
return 1;
}
static int vlclua_input_item_get_current( lua_State *L )
{
input_thread_t *p_input = vlclua_get_input_internal( L );
input_item_t *p_item = ( p_input && p_input->p ) ? input_GetItem( p_input ) : NULL;
if( !p_item )
{
lua_pushnil( L );
if( p_input ) vlc_object_release( p_input );
return 1;
}
vlc_gc_incref( p_item );
input_item_t **pp = lua_newuserdata( L, sizeof( void* ) );
*pp = p_item;
if( luaL_newmetatable( L, "input_item" ) )
{
lua_newtable( L );
luaL_register( L, NULL, vlclua_input_item_reg );
lua_setfield( L, -2, "__index" );
lua_pushcfunction( L, vlclua_input_item_delete );
lua_setfield( L, -2, "__gc" );
}
lua_setmetatable( L, -2 );
if( p_input ) vlc_object_release( p_input );
return 1;
}
static int vlclua_input_item_metas( lua_State *L )
{
vlclua_input_metas_internal( L, vlclua_input_item_get_internal( L ) );
return 1;
}
static int vlclua_input_item_set_meta( lua_State *L )
{
input_item_t *p_item = vlclua_input_item_get_internal( L );
lua_settop( L, 1 + 2 ); // two arguments
const char *psz_name = luaL_checkstring( L, 2 ),
*psz_value = luaL_checkstring( L, 3 );
#define META_TYPE( n ) { #n, vlc_meta_ ## n }
static const struct
{
const char *psz_name;
vlc_meta_type_t type;
} pp_meta_types[] = {
META_TYPE( Title ),
META_TYPE( Artist ),
META_TYPE( Genre ),
META_TYPE( Copyright ),
META_TYPE( Album ),
META_TYPE( TrackNumber ),
META_TYPE( Description ),
META_TYPE( Rating ),
META_TYPE( Date ),
META_TYPE( Setting ),
META_TYPE( URL ),
META_TYPE( Language ),
META_TYPE( NowPlaying ),
META_TYPE( Publisher ),
META_TYPE( EncodedBy ),
META_TYPE( ArtworkURL ),
META_TYPE( TrackID ),
};
#undef META_TYPE
vlc_meta_type_t type = vlc_meta_Title;
bool ok = false;
for( unsigned i = 0; i < VLC_META_TYPE_COUNT; i++ )
{
if( !strcasecmp( pp_meta_types[i].psz_name, psz_name ) )
{
type = pp_meta_types[i].type;
ok = true;
}
}
if( !ok )
return luaL_error( L, "unknown meta type '%s'", psz_name );
input_item_SetMeta( p_item, type, psz_value );
return 1;
}
/*****************************************************************************
* Lua bindings
*****************************************************************************/
......@@ -210,6 +332,7 @@ static const luaL_Reg vlclua_input_reg[] = {
{ "is_playing", vlclua_input_is_playing },
{ "get_title", vlclua_input_get_title },
{ "metas", vlclua_input_metas },
{ "item", vlclua_input_item_get_current },
{ "stats", vlclua_input_stats },
{ "add_subtitle", vlclua_input_add_subtitle },
{ NULL, NULL }
......@@ -221,3 +344,9 @@ void luaopen_input( lua_State *L )
luaL_register( L, NULL, vlclua_input_reg );
lua_setfield( L, -2, "input" );
}
static const luaL_Reg vlclua_input_item_reg[] = {
{ "metas", vlclua_input_item_metas },
{ "set_meta", vlclua_input_item_set_meta },
{ NULL, NULL }
};
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