meta reader: Add the input_item that we are reading in the structure.

include/vlc_demux.h

@@ -82,6 +82,8 @@ typedef struct demux_meta_t
 {
     VLC_COMMON_MEMBERS
     demux_t *p_demux; /** FIXME: use stream_t instead? */
+    input_item_t *p_item; /***< the input item that is being read */
+
     vlc_meta_t *p_meta;                 /**< meta data */
 
     int i_attachments;                  /**< number of attachments */

src/input/input.c

@@ -2767,6 +2767,7 @@ static void InputSourceMeta( input_thread_t *p_input,
     if( !p_demux_meta )
         return;
     p_demux_meta->p_demux = p_demux;
+    p_demux_meta->p_item = p_input->p->p_item;
 
     module_t *p_id3 = module_need( p_demux_meta, "meta reader", NULL, false );
     if( p_id3 )