Fix save/load of MIDI automation state. Fixes #3354.

git-svn-id: svn://localhost/ardour2/branches/3.0@7578 d708f5d6-7413-0410-9779-e7cbd77b26cf

11 files changed, 133 insertions, 45 deletions

diff --git a/libs/ardour/ardour/automatable.h b/libs/ardour/ardour/automatable.h
index 2f35fc6b42..e0fe38e67e 100644
--- a/libs/ardour/ardour/automatable.h
+++ b/libs/ardour/ardour/automatable.h
@@ -65,7 +65,7 @@ public:
 
 	virtual std::string describe_parameter(Evoral::Parameter param);
 
-	AutoState get_parameter_automation_state (Evoral::Parameter param, bool lock = true);
+	AutoState get_parameter_automation_state (Evoral::Parameter param);
 	virtual void set_parameter_automation_state (Evoral::Parameter param, AutoState);
 
 	AutoStyle get_parameter_automation_style (Evoral::Parameter param);
@@ -95,16 +95,13 @@ public:
 
 	int set_automation_state (const XMLNode&, Evoral::Parameter default_param);
 	XMLNode& get_automation_state();
-
-	/** Emitted when the automation state of one of our controls changes */
-	PBD::Signal1<void, Evoral::Parameter> AutomationStateChanged;
 	
   protected:
 	Session& _a_session;
 
 	void can_automate(Evoral::Parameter);
 
-	virtual void auto_state_changed (Evoral::Parameter /*which*/) {}
+	virtual void automation_list_automation_state_changed (Evoral::Parameter, AutoState) {}
 
 	int load_automation (const std::string& path);
 	int old_set_automation_state(const XMLNode&);
@@ -116,7 +113,6 @@ public:
 	static nframes_t _automation_interval;
 
 private:
-	void automation_state_changed (Evoral::Parameter const &);
 	PBD::ScopedConnectionList _control_connections; ///< connections to our controls' signals
 };
 
diff --git a/libs/ardour/ardour/automation_list.h b/libs/ardour/ardour/automation_list.h
index 77b8d49dc7..acb071cca7 100644
--- a/libs/ardour/ardour/automation_list.h
+++ b/libs/ardour/ardour/automation_list.h
@@ -54,7 +54,7 @@ class AutomationList : public PBD::StatefulDestructible, public Evoral::ControlL
 
 	void set_automation_state (AutoState);
 	AutoState automation_state() const { return _state; }
-	PBD::Signal0<void> automation_state_changed;
+	PBD::Signal1<void, AutoState> automation_state_changed;
 
 	void set_automation_style (AutoStyle m);
 	AutoStyle automation_style() const { return _style; }
diff --git a/libs/ardour/ardour/midi_model.h b/libs/ardour/ardour/midi_model.h
index e91d6484ea..e959535a36 100644
--- a/libs/ardour/ardour/midi_model.h
+++ b/libs/ardour/ardour/midi_model.h
@@ -174,7 +174,9 @@ private:
 	friend class DeltaCommand;
 
 	void source_interpolation_changed (Evoral::Parameter, Evoral::ControlList::InterpolationStyle);
+	void source_automation_state_changed (Evoral::Parameter, AutoState);
 	void control_list_interpolation_changed (Evoral::Parameter, Evoral::ControlList::InterpolationStyle);
+	void automation_list_automation_state_changed (Evoral::Parameter, AutoState);
 	
 	PBD::ScopedConnectionList _midi_source_connections;
 
diff --git a/libs/ardour/ardour/midi_source.h b/libs/ardour/ardour/midi_source.h
index 8d20f9c7b6..5afcc20255 100644
--- a/libs/ardour/ardour/midi_source.h
+++ b/libs/ardour/ardour/midi_source.h
@@ -122,10 +122,17 @@ class MidiSource : virtual public Source
 	void copy_interpolation_from (boost::shared_ptr<MidiSource>);
 	void copy_interpolation_from (MidiSource *);
 
+	AutoState automation_state_of (Evoral::Parameter) const;
+	void set_automation_state_of (Evoral::Parameter, AutoState);
+	void copy_automation_state_from (boost::shared_ptr<MidiSource>);
+	void copy_automation_state_from (MidiSource *);
+
 	/** Emitted when a different MidiModel is set */
 	PBD::Signal0<void> ModelChanged;
 	/** Emitted when a parameter's interpolation style is changed */
 	PBD::Signal2<void, Evoral::Parameter, Evoral::ControlList::InterpolationStyle> InterpolationChanged;
+	/** Emitted when a parameter's automation state is changed */
+	PBD::Signal2<void, Evoral::Parameter, AutoState> AutomationStateChanged;
 
   protected:
 	virtual void flush_midi() = 0;
@@ -159,6 +166,12 @@ class MidiSource : virtual public Source
 	 */
 	typedef std::map<Evoral::Parameter, Evoral::ControlList::InterpolationStyle> InterpolationStyleMap;
 	InterpolationStyleMap _interpolation_style;
+
+	/** Map of automation states to use for Parameters; if they are not in this map,
+	 *  the correct automation state is Off.
+	 */
+	typedef std::map<Evoral::Parameter, AutoState> AutomationStateMap;
+	AutomationStateMap  _automation_state;
 };
 
 }
diff --git a/libs/ardour/ardour/plugin_insert.h b/libs/ardour/ardour/plugin_insert.h
index c962832eb1..6656f755cf 100644
--- a/libs/ardour/ardour/plugin_insert.h
+++ b/libs/ardour/ardour/plugin_insert.h
@@ -133,7 +133,7 @@ class PluginInsert : public Processor
 	void connect_and_run (BufferSet& bufs, nframes_t nframes, nframes_t offset, bool with_auto, nframes_t now = 0);
 
 	void set_automatable ();
-	void auto_state_changed (Evoral::Parameter which);
+	void control_list_automation_state_changed (Evoral::Parameter, AutoState);
 	void set_parameter_state (const XMLNode& node, int version);
 	void set_parameter_state_2X (const XMLNode& node, int version);
 
diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index c71fabda37..d6379eb38e 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -147,19 +147,17 @@ Automatable::add_control(boost::shared_ptr<Evoral::Control> ac)
 {
 	Evoral::Parameter param = ac->parameter();
 
-	ControlSet::add_control(ac);
-	_can_automate_list.insert(param);
-	auto_state_changed(param); // sync everything up
-
-	/* connect to automation_state_changed so that we can emit a signal when one of our controls'
-	   automation state changes
-	*/
-	boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl> (ac);
-	if (c) {
-		c->alist()->automation_state_changed.connect_same_thread (
-			_control_connections, boost::bind (&Automatable::automation_state_changed, this, c->parameter())
-			);
-	}
+	boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (ac->list ());
+	assert (al);
+	
+	al->automation_state_changed.connect_same_thread (
+		_list_connections, boost::bind (&Automatable::automation_list_automation_state_changed, this, ac->parameter(), _1)
+		);
+
+	ControlSet::add_control (ac);
+	_can_automate_list.insert (param);
+
+	automation_list_automation_state_changed (param, al->automation_state ()); // sync everything up
 }
 
 void
@@ -315,21 +313,16 @@ Automatable::set_parameter_automation_state (Evoral::Parameter param, AutoState
 }
 
 AutoState
-Automatable::get_parameter_automation_state (Evoral::Parameter param, bool lock)
+Automatable::get_parameter_automation_state (Evoral::Parameter param)
 {
 	AutoState result = Off;
 
-	if (lock)
-		control_lock().lock();
-
 	boost::shared_ptr<Evoral::Control> c = control(param);
 	boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 
-	if (c)
+	if (c) {
 		result = l->automation_state();
-
-	if (lock)
-		control_lock().unlock();
+	}
 
 	return result;
 }
@@ -480,15 +473,8 @@ Automatable::automation_control (const Evoral::Parameter& id) const
 }
 
 void
-Automatable::automation_state_changed (Evoral::Parameter const & p)
-{
-	AutomationStateChanged (p); /* EMIT SIGNAL */
-}
-
-void
 Automatable::clear_controls ()
 {
 	_control_connections.drop_connections ();
 	ControlSet::clear_controls ();
 }
-	
diff --git a/libs/ardour/automation_list.cc b/libs/ardour/automation_list.cc
index 17f346db1d..2270b2eff7 100644
--- a/libs/ardour/automation_list.cc
+++ b/libs/ardour/automation_list.cc
@@ -180,7 +180,7 @@ AutomationList::set_automation_state (AutoState s)
 {
 	if (s != _state) {
 		_state = s;
-		automation_state_changed (); /* EMIT SIGNAL */
+		automation_state_changed (s); /* EMIT SIGNAL */
 	}
 }
 
diff --git a/libs/ardour/midi_model.cc b/libs/ardour/midi_model.cc
index 6922384e71..39daaacdea 100644
--- a/libs/ardour/midi_model.cc
+++ b/libs/ardour/midi_model.cc
@@ -1094,14 +1094,18 @@ MidiModel::set_midi_source (MidiSource* s)
 	_midi_source->InterpolationChanged.connect_same_thread (
 		_midi_source_connections, boost::bind (&MidiModel::source_interpolation_changed, this, _1, _2)
 		);
+
+	_midi_source->AutomationStateChanged.connect_same_thread (
+		_midi_source_connections, boost::bind (&MidiModel::source_automation_state_changed, this, _1, _2)
+		);
 }
 
 /** The source has signalled that the interpolation style for a parameter has changed.  In order to
  *  keep MidiSource and ControlList interpolation state the same, we pass this change onto the
  *  appropriate ControlList.
  *
- *  The idea is that MidiSource and the MidiModel's ControlList states are kept in sync, and the
- *  MidiSource's InterpolationChanged signal is listened to by the GUI.
+ *  The idea is that MidiSource and the MidiModel's ControlList states are kept in sync, and one
+ *  or the other is listened to by the GUI.
  */
 void
 MidiModel::source_interpolation_changed (Evoral::Parameter p, Evoral::ControlList::InterpolationStyle s)
@@ -1119,18 +1123,37 @@ MidiModel::control_list_interpolation_changed (Evoral::Parameter p, Evoral::Cont
 	_midi_source->set_interpolation_of (p, s);
 }
 
+void
+MidiModel::source_automation_state_changed (Evoral::Parameter p, AutoState s)
+{
+	Glib::Mutex::Lock lm (_control_lock);
+	boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (control(p)->list ());
+	al->set_automation_state (s);
+}
+
+void
+MidiModel::automation_list_automation_state_changed (Evoral::Parameter p, AutoState s)
+{
+	_midi_source->set_automation_state_of (p, s);
+}
+
 boost::shared_ptr<Evoral::Control>
 MidiModel::control_factory (Evoral::Parameter const & p)
 {
 	boost::shared_ptr<Evoral::Control> c = Automatable::control_factory (p);
 
-	/* Set up newly created control's lists to the appropriate interpolation state
-	   from our source.
+	/* Set up newly created control's lists to the appropriate interpolation and
+	   automation state from our source.
 	*/
 
 	assert (_midi_source);
 
 	c->list()->set_interpolation (_midi_source->interpolation_of (p));
 
+	boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (c->list ());
+	assert (al);
+
+	al->set_automation_state (_midi_source->automation_state_of (p));
+
 	return c;
 }
diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index c76b6a859e..91f9ee58ed 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -291,7 +291,7 @@ MidiRegion::model_changed ()
 	}
 
 	/* watch for changes to controls' AutoState */
-	model()->AutomationStateChanged.connect_same_thread (
+	midi_source()->AutomationStateChanged.connect_same_thread (
 		_model_connection, boost::bind (&MidiRegion::model_automation_state_changed, this, _1)
 		);
 }
diff --git a/libs/ardour/midi_source.cc b/libs/ardour/midi_source.cc
index 5a823d332e..97fb801a6c 100644
--- a/libs/ardour/midi_source.cc
+++ b/libs/ardour/midi_source.cc
@@ -102,7 +102,13 @@ MidiSource::get_state ()
 		child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
 		child->add_property (X_("style"), enum_2_string (i->second));
 	}
-				     
+
+	for (AutomationStateMap::const_iterator i = _automation_state.begin(); i != _automation_state.end(); ++i) {
+		XMLNode* child = node.add_child (X_("AutomationState"));
+		child->add_property (X_("parameter"), EventTypeMap::instance().to_symbol (i->first));
+		child->add_property (X_("state"), enum_2_string (i->second));
+	}
+
 	return node;
 }
 
@@ -134,6 +140,25 @@ MidiSource::set_state (const XMLNode& node, int /*version*/)
 
 			Evoral::ControlList::InterpolationStyle s = static_cast<Evoral::ControlList::InterpolationStyle> (string_2_enum (prop->value(), s));
 			set_interpolation_of (p, s);
+			
+		} else if ((*i)->name() == X_("AutomationState")) {
+			
+			XMLProperty* prop;
+
+			if ((prop = (*i)->property (X_("parameter"))) == 0) {
+				error << _("Missing parameter property on AutomationState") << endmsg;
+				return -1;
+			}
+			
+			Evoral::Parameter p = EventTypeMap::instance().new_parameter (prop->value());
+
+			if ((prop = (*i)->property (X_("state"))) == 0) {
+				error << _("Missing state property on AutomationState") << endmsg;
+				return -1;
+			}
+
+			AutoState s = static_cast<AutoState> (string_2_enum (prop->value(), s));
+			set_automation_state_of (p, s);
 		}
 	}
 
@@ -290,6 +315,7 @@ MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
         
         newsrc->set_timeline_position(_timeline_position);
 	newsrc->copy_interpolation_from (this);
+	newsrc->copy_automation_state_from (this);
 
         if (_model) {
                 if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
@@ -385,6 +411,17 @@ MidiSource::interpolation_of (Evoral::Parameter p) const
 	return i->second;
 }
 
+AutoState
+MidiSource::automation_state_of (Evoral::Parameter p) const
+{
+	AutomationStateMap::const_iterator i = _automation_state.find (p);
+	if (i == _automation_state.end()) {
+		return Off;
+	}
+
+	return i->second;
+}
+
 /** Set interpolation style to be used for a given parameter.  This change will be
  *  propagated to anyone who needs to know.
  */
@@ -406,15 +443,46 @@ MidiSource::set_interpolation_of (Evoral::Parameter p, Evoral::ControlList::Inte
 }
 
 void
+MidiSource::set_automation_state_of (Evoral::Parameter p, AutoState s)
+{
+	if (automation_state_of (p) == s) {
+		return;
+	}
+	
+	if (s == Off) {
+		/* automation state is being set to the default, so we don't need a note in our map */
+		_automation_state.erase (p);
+	} else {
+		_automation_state[p] = s;
+	}
+
+	AutomationStateChanged (p, s); /* EMIT SIGNAL */
+}
+
+void
 MidiSource::copy_interpolation_from (boost::shared_ptr<MidiSource> s)
 {
 	copy_interpolation_from (s.get ());
 }
 
 void
+MidiSource::copy_automation_state_from (boost::shared_ptr<MidiSource> s)
+{
+	copy_automation_state_from (s.get ());
+}
+
+void
 MidiSource::copy_interpolation_from (MidiSource* s)
 {
 	_interpolation_style = s->_interpolation_style;
 
 	/* XXX: should probably emit signals here */
 }
+
+void
+MidiSource::copy_automation_state_from (MidiSource* s)
+{
+	_automation_state = s->_automation_state;
+
+	/* XXX: should probably emit signals here */
+}
diff --git a/libs/ardour/plugin_insert.cc b/libs/ardour/plugin_insert.cc
index fa48156787..d1f09dd0a8 100644
--- a/libs/ardour/plugin_insert.cc
+++ b/libs/ardour/plugin_insert.cc
@@ -114,7 +114,7 @@ PluginInsert::~PluginInsert ()
 }
 
 void
-PluginInsert::auto_state_changed (Evoral::Parameter which)
+PluginInsert::control_list_automation_state_changed (Evoral::Parameter which, AutoState s)
 {
 	if (which.type() != PluginAutomation)
 		return;
@@ -122,7 +122,7 @@ PluginInsert::auto_state_changed (Evoral::Parameter which)
 	boost::shared_ptr<AutomationControl> c
 			= boost::dynamic_pointer_cast<AutomationControl>(control (which));
 
-	if (c && ((AutomationList*)c->list().get())->automation_state() != Off) {
+	if (c && s != Off) {
 		_plugins[0]->set_parameter (which.id(), c->list()->eval (_session.transport_frame()));
 	}
 }