access.c: LID and Segment for non PBC (the default) needs more work.

Check for them and disable (somewhat).

vcdplayer.c: check for invalid LSN in setting origin.

modules/access/vcdx/access.c

@@ -1140,10 +1140,25 @@ static int VCDControl( access_t *p_access, int i_query, va_list args )
                 unsigned int     i_entry =
                   vcdinfo_track_get_entry( p_vcdplayer->vcd, i_track);
 
+		if( i < p_vcdplayer->i_tracks ) 
+		{
 		    /* FIXME! For now we are assuming titles are only
 		       tracks and that track == title+1 */
 		    itemid.num = i_track;
 		    itemid.type = VCDINFO_ITEM_TYPE_TRACK;
+		} 
+		else 
+		{
+		    /* FIXME! i_tracks+2 are Segments, but we need to 
+		       be able to figure out which segment of that.
+                       i_tracks+1 is either Segments (if no LIDs) or 
+		       LIDs otherwise. Again need a way to get the LID 
+		       number. */
+		    msg_Warn( p_access,
+                    "Trying to set track (%u) beyond end of last track (%u).",
+			      i+1, p_vcdplayer->i_tracks );
+		    return VLC_EGENERIC;
+		}
 		
                 VCDSetOrigin(p_access,
                      vcdinfo_get_entry_lsn(p_vcdplayer->vcd, i_entry),

modules/access/vcdx/vcdplayer.c

@@ -326,7 +326,6 @@ vcdplayer_play_single_item( access_t * p_access, vcdinfo_itemid_t itemid)
    changed: p_vcdplayer->origin_lsn, p_vcdplayer->end_lsn
 */
 
-/* FIXME: add parameters lsn, i_track, p_itemid and set accordingly. */
 void 
 vcdplayer_set_origin(access_t *p_access, lsn_t i_lsn, track_t i_track,
 		     const vcdinfo_itemid_t *p_itemid)
@@ -334,6 +333,12 @@ vcdplayer_set_origin(access_t *p_access, lsn_t i_lsn, track_t i_track,
   vcdplayer_t *p_vcdplayer = (vcdplayer_t *)p_access->p_sys;
   const size_t i_size= vcdplayer_get_item_size(p_access, *p_itemid);
 
+  if( VCDINFO_NULL_LSN == i_lsn ) 
+  {
+      LOG_ERR("%s %d", "Invalid LSN for track", i_track);
+      return;
+  }
+
   p_vcdplayer->play_item.num  = p_itemid->num;
   p_vcdplayer->play_item.type = p_itemid->type;
   p_vcdplayer->i_lsn          = i_lsn;