fix crash when copy'ing latent plugins

[ardour.git] / libs / ardour / mute_control.cc

diff --git a/libs/ardour/mute_control.cc b/libs/ardour/mute_control.cc
index a639cbda7a848f153660659497e78b0f9781d75b..5b38547366778081b9a479abf216780f1d869fca 100644 (file)
--- a/libs/ardour/mute_control.cc
+++ b/libs/ardour/mute_control.cc
@@ -22,7 +22,7 @@
 #include "ardour/session.h"
 #include "ardour/mute_control.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace ARDOUR;
 using namespace std;
@@ -39,10 +39,45 @@ MuteControl::MuteControl (Session& session, std::string const & name, Muteable&
        set_flags (Controllable::Flag (flags() | Controllable::RealTime));
 }
 
+void
+MuteControl::post_add_master (boost::shared_ptr<AutomationControl> m)
+{
+       if (m->get_value()) {
+
+               /* boolean masters records are not updated until AFTER
+                * ::post_add_master() is called, so we can use them to check
+                * on whether any master was already enabled before the new
+                * one was added.
+                */
+
+               if (!muted_by_self() && !get_boolean_masters()) {
+                       _muteable.mute_master()->set_muted_by_masters (true);
+                       Changed (false, Controllable::NoGroup);
+               }
+       }
+}
+
+void
+MuteControl::pre_remove_master (boost::shared_ptr<AutomationControl> m)
+{
+       if (!m) {
+               /* null control ptr means we're removing all masters */
+               _muteable.mute_master()->set_muted_by_masters (false);
+               /* Changed will be emitted in SlavableAutomationControl::clear_masters() */
+               return;
+       }
+
+       if (m->get_value()) {
+               if (!muted_by_self() && (get_boolean_masters() == 1)) {
+                       Changed (false, Controllable::NoGroup);
+               }
+       }
+}
+
 void
 MuteControl::actually_set_value (double val, Controllable::GroupControlDisposition gcd)
 {
-       if (muted() != bool (val)) {
+       if (muted_by_self() != bool (val)) {
                _muteable.mute_master()->set_muted_by_self (val);
 
                /* allow the Muteable to respond to the mute change
@@ -51,15 +86,41 @@ MuteControl::actually_set_value (double val, Controllable::GroupControlDispositi
                _muteable.act_on_mute ();
        }
 
-       AutomationControl::actually_set_value (val, gcd);
+       SlavableAutomationControl::actually_set_value (val, gcd);
+}
+
+void
+MuteControl::master_changed (bool self_change, Controllable::GroupControlDisposition gcd, boost::shared_ptr<AutomationControl> m)
+{
+       bool send_signal = false;
+       boost::shared_ptr<MuteControl> mc = boost::dynamic_pointer_cast<MuteControl> (m);
+
+       if (m->get_value()) {
+               /* this master is now enabled */
+               if (!muted_by_self() && get_boolean_masters() == 0) {
+                       _muteable.mute_master()->set_muted_by_masters (true);
+                       send_signal = true;
+               }
+       } else {
+               /* this master is disabled and there was only 1 enabled before */
+               if (!muted_by_self() && get_boolean_masters() == 1) {
+                       _muteable.mute_master()->set_muted_by_masters (false);
+                       send_signal = true;
+               }
+       }
+
+       update_boolean_masters_records (m);
+
+       if (send_signal) {
+               Changed (false, Controllable::NoGroup);
+       }
 }
 
 double
 MuteControl::get_value () const
 {
-       if (slaved()) {
-               Glib::Threads::RWLock::ReaderLock lm (master_lock);
-               return get_masters_value_locked () ? 1.0 : 0.0;
+       if (slaved ()) {
+               return muted_by_self() || get_masters_value ();
        }
 
        if (_list && boost::dynamic_pointer_cast<AutomationList>(_list)->automation_playback()) {
@@ -67,7 +128,7 @@ MuteControl::get_value () const
                return AutomationControl::get_value();
        }
 
-       return muted() ? 1.0 : 0.0;
+       return muted();
 }
 
 void
@@ -89,12 +150,45 @@ MuteControl::mute_points () const
 
 bool
 MuteControl::muted () const
+{
+       /* have to get (self-muted) value from somewhere. could be our own
+          Control, or the Muteable that we sort-of proxy for. Since this
+          method is called by ::get_value(), use the latter to avoid recursion.
+       */
+       return _muteable.mute_master()->muted_by_self() || get_masters_value ();
+}
+
+bool
+MuteControl::muted_by_self () const
 {
        return _muteable.mute_master()->muted_by_self();
 }
 
 bool
-MuteControl::muted_by_others () const
+MuteControl::muted_by_masters () const
+{
+       return get_masters_value ();
+}
+
+bool
+MuteControl::muted_by_others_soloing () const
+{
+       return _muteable.muted_by_others_soloing ();
+}
+
+void
+MuteControl::automation_run (framepos_t start, pframes_t)
 {
-       return _muteable.mute_master()->muted_by_others () || get_masters_value();
+       if (!list() || !automation_playback()) {
+               return;
+       }
+
+       bool        valid = false;
+       const float mute  = list()->rt_safe_eval (start, valid);
+
+       if (mute >= 0.5 && !muted()) {
+               set_value_unchecked (1.0);  // mute
+       } else if (mute < 0.5 && muted ()) {
+               set_value_unchecked (0.0);  // unmute
+       }
 }