AVI: add an automatic decision choice for AVI index

Propose a choice to automatically rebuild the index when broken...

modules/demux/avi/avi.c

@@ -59,11 +59,12 @@
 static int  Open ( vlc_object_t * );
 static void Close( vlc_object_t * );
 
-static const int pi_index[] = {0,1,2};
+static const int pi_index[] = {0,1,2,3};
 
 static const char *const ppsz_indexes[] = { N_("Ask for action"),
                                             N_("Always fix"),
-                                            N_("Never fix") };
+                                            N_("Never fix"),
+                                            N_("Fix when necessary")};
 
 vlc_module_begin ()
     set_shortname( "AVI" )
@@ -666,12 +667,14 @@ aviindex:
 
         msg_Warn( p_demux, "broken or missing index, 'seek' will be "
                            "approximative or will exhibit strange behavior" );
-        if( i_do_index == 0 && !b_index )
+        if( (i_do_index == 0 || i_do_index == 3) && !b_index )
         {
             if( !p_sys->b_seekable ) {
                 b_index = true;
                 goto aviindex;
             }
+            if( i_do_index == 0 )
+            {
                 switch( dialog_Question( p_demux, _("Broken or missing AVI Index") ,
                    _( "Because this AVI file index is broken or missing, "
                       "seeking will not work correctly.\n"
@@ -691,6 +694,13 @@ aviindex:
                         goto error;
                 }
             }
+            else
+            {
+                b_index = true;
+                msg_Dbg( p_demux, "Fixing AVI index" );
+                goto aviindex;
+            }
+        }
     }
 
     /* fix some BeOS MediaKit generated file */