Work around silence-trim config 0dBFS (7b1f97bf)

[ardour.git] / gtk2_ardour / route_processor_selection.cc

diff --git a/gtk2_ardour/route_processor_selection.cc b/gtk2_ardour/route_processor_selection.cc
index 729032e637fde74e8df417b98261e329c85471c9..7428267b50b4d77d8d7398f10ca90d390a9ca77c 100644 (file)
--- a/gtk2_ardour/route_processor_selection.cc
+++ b/gtk2_ardour/route_processor_selection.cc
@@ -32,8 +32,8 @@ using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 
+unsigned int RouteProcessorSelection::_no_route_change_signal = 0;
 RouteProcessorSelection::RouteProcessorSelection()
-       : _no_route_change_signal (false)
 {
 }
 
@@ -76,7 +76,7 @@ RouteProcessorSelection::clear_routes ()
        }
        axes.clear ();
        drop_connections ();
-       if (!_no_route_change_signal) {
+       if (0 == _no_route_change_signal) {
                RoutesChanged ();
        }
 }
@@ -110,7 +110,7 @@ RouteProcessorSelection::add (AxisView* r)
                        ms->CatchDeletion.connect (*this, invalidator (*this), boost::bind (&RouteProcessorSelection::remove, this, _1), gui_context());
                }
 
-               if (!_no_route_change_signal) {
+               if (0 == _no_route_change_signal) {
                        RoutesChanged();
                }
        }
@@ -125,7 +125,7 @@ RouteProcessorSelection::remove (AxisView* r)
        if ((i = find (axes.begin(), axes.end(), r)) != axes.end()) {
                (*i)->set_selected (false);
                axes.erase (i);
-               if (!_no_route_change_signal) {
+               if (0 == _no_route_change_signal) {
                        RoutesChanged ();
                }
        }
@@ -153,5 +153,10 @@ RouteProcessorSelection::empty ()
 void
 RouteProcessorSelection::block_routes_changed (bool yn)
 {
-       _no_route_change_signal = yn;
+       if (yn) {
+               ++_no_route_change_signal;
+       } else {
+               assert (_no_route_change_signal > 0);
+               --_no_route_change_signal;
+       }
 }