X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fautomatable.cc;h=f85bc83e8549a49e78ce806cb4edc444ee5cc2fd;hb=17ace643e4edbec1e5bd7b446d039f8c94beef75;hp=5b31904615e096fc7ef7cad295b29971e3f8ee5f;hpb=ef0b9a740996c432a6a96180814d4f8d0ee16842;p=ardour.git

diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index 5b31904615..f85bc83e85 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2001,2007 Paul Davis 
+    Copyright (C) 2001,2007 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,15 +17,26 @@
 
 */
 
-#include <ardour/ardour.h>
-#include <fstream>
-#include <inttypes.h>
 #include <cstdio>
 #include <errno.h>
-#include <pbd/error.h>
-#include <pbd/enumwriter.h>
-#include <ardour/session.h>
-#include <ardour/automatable.h>
+
+#include "pbd/gstdio_compat.h"
+#include <glibmm/miscutils.h>
+
+#include "pbd/error.h"
+
+#include "ardour/amp.h"
+#include "ardour/automatable.h"
+#include "ardour/event_type_map.h"
+#include "ardour/gain_control.h"
+#include "ardour/midi_track.h"
+#include "ardour/pan_controllable.h"
+#include "ardour/pannable.h"
+#include "ardour/plugin.h"
+#include "ardour/plugin_insert.h"
+#include "ardour/session.h"
+#include "ardour/uri_map.h"
+#include "ardour/value_as_string.h"
 
 #include "i18n.h"
 
@@ -33,40 +44,46 @@ using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 
+const string Automatable::xml_node_name = X_("Automation");
+
+Automatable::Automatable(Session& session)
+	: _a_session(session)
+{
+}
+
+Automatable::Automatable (const Automatable& other)
+        : ControlSet (other)
+        , _a_session (other._a_session)
+{
+        Glib::Threads::Mutex::Lock lm (other._control_lock);
 
-Automatable::Automatable(Session& _session, const string& name)
-	: SessionObject(_session, name)
-	, _last_automation_snapshot(0)
-{}
+        for (Controls::const_iterator i = other._controls.begin(); i != other._controls.end(); ++i) {
+                boost::shared_ptr<Evoral::Control> ac (control_factory (i->first));
+		add_control (ac);
+        }
+}
+
+Automatable::~Automatable ()
+{
+	{
+		Glib::Threads::Mutex::Lock lm (_control_lock);
+
+		for (Controls::const_iterator li = _controls.begin(); li != _controls.end(); ++li) {
+			boost::dynamic_pointer_cast<AutomationControl>(li->second)->drop_references ();
+		}
+	}
+}
 
 int
 Automatable::old_set_automation_state (const XMLNode& node)
 {
-	const XMLProperty *prop;
-			
+	XMLProperty const * prop;
+
 	if ((prop = node.property ("path")) != 0) {
 		load_automation (prop->value());
 	} else {
-		warning << string_compose(_("%1: Automation node has no path property"), _name) << endmsg;
-	}
-	
-	if ((prop = node.property ("visible")) != 0) {
-		uint32_t what;
-		stringstream sstr;
-		
-		_visible_controls.clear ();
-		
-		sstr << prop->value();
-		while (1) {
-			sstr >> what;
-			if (sstr.fail()) {
-				break;
-			}
-			mark_automation_visible (ParamID(PluginAutomation, what), true);
-		}
+		warning << _("Automation node has no path property") << endmsg;
 	}
-	
-	_last_automation_snapshot = 0;
 
 	return 0;
 }
@@ -76,188 +93,108 @@ Automatable::load_automation (const string& path)
 {
 	string fullpath;
 
-	if (path[0] == '/') { // legacy
+	if (Glib::path_is_absolute (path)) { // legacy
 		fullpath = path;
 	} else {
-		fullpath = _session.automation_dir();
+		fullpath = _a_session.automation_dir();
 		fullpath += path;
 	}
-	ifstream in (fullpath.c_str());
+
+	FILE * in = g_fopen (fullpath.c_str (), "rb");
 
 	if (!in) {
-		warning << string_compose(_("%1: cannot open %2 to load automation data (%3)"), _name, fullpath, strerror (errno)) << endmsg;
+		warning << string_compose(_("cannot open %2 to load automation data (%3)")
+				, fullpath, strerror (errno)) << endmsg;
 		return 1;
 	}
 
-	Glib::Mutex::Lock lm (_automation_lock);
-	set<ParamID> tosave;
-	_controls.clear ();
-	
-	_last_automation_snapshot = 0;
+	Glib::Threads::Mutex::Lock lm (control_lock());
+	set<Evoral::Parameter> tosave;
+	controls().clear ();
 
-	while (in) {
+	while (!feof(in)) {
 		double when;
 		double value;
 		uint32_t port;
 
-		in >> port;  if (!in) break;
-		in >> when;  if (!in) goto bad;
-		in >> value; if (!in) goto bad;
-		
+		if (3 != fscanf (in, "%d %lf %lf", &port, &when, &value)) {
+			if (feof(in)) {
+				break;
+			}
+			goto bad;
+		}
+
+		Evoral::Parameter param(PluginAutomation, 0, port);
 		/* FIXME: this is legacy and only used for plugin inserts?  I think? */
-		boost::shared_ptr<AutomationControl> c = control (ParamID(PluginAutomation, port), true);
+		boost::shared_ptr<Evoral::Control> c = control (param, true);
 		c->list()->add (when, value);
-		tosave.insert (ParamID(PluginAutomation, port));
+		tosave.insert (param);
 	}
-	
+	::fclose (in);
+
 	return 0;
 
   bad:
-	error << string_compose(_("%1: cannot load automation data from %2"), _name, fullpath) << endmsg;
-	_controls.clear ();
+	error << string_compose(_("cannot load automation data from %2"), fullpath) << endmsg;
+	controls().clear ();
+	::fclose (in);
 	return -1;
 }
 
 void
-Automatable::add_control(boost::shared_ptr<AutomationControl> ac)
+Automatable::add_control(boost::shared_ptr<Evoral::Control> ac)
 {
-	ParamID param = ac->list()->param_id();
-
-	_controls[param] = ac;
-	
-	cerr << _name << ": added parameter " << param.to_string() << endl;
+	Evoral::Parameter param = ac->parameter();
 
-	_can_automate_list.insert(param);
-
-	// Sync everything (derived classes) up to initial values
-	auto_state_changed(param);
-}
+	boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (ac->list ());
 
-void
-Automatable::what_has_automation (set<ParamID>& s) const
-{
-	Glib::Mutex::Lock lm (_automation_lock);
-	Controls::const_iterator li;
-	
-	// FIXME: correct semantics?
-	for (li = _controls.begin(); li != _controls.end(); ++li) {
-		s.insert  ((*li).first);
+	if (al) {
+		al->automation_state_changed.connect_same_thread (
+			_list_connections,
+			boost::bind (&Automatable::automation_list_automation_state_changed,
+			             this, ac->parameter(), _1));
 	}
-}
 
-void
-Automatable::what_has_visible_automation (set<ParamID>& s) const
-{
-	Glib::Mutex::Lock lm (_automation_lock);
-	set<ParamID>::const_iterator li;
-	
-	for (li = _visible_controls.begin(); li != _visible_controls.end(); ++li) {
-		s.insert  (*li);
-	}
-}
+	ControlSet::add_control (ac);
 
-/** Returns NULL if we don't have an AutomationList for \a parameter.
- */
-boost::shared_ptr<AutomationControl>
-Automatable::control (ParamID parameter, bool create_if_missing)
-{
-	Controls::iterator i = _controls.find(parameter);
-
-	if (i != _controls.end()) {
-		return i->second;
-
-	} else if (create_if_missing) {
-		assert(parameter.type() != GainAutomation);
-		boost::shared_ptr<AutomationList> al (new AutomationList (
-					parameter, FLT_MIN, FLT_MAX, default_parameter_value (parameter)));
-		boost::shared_ptr<AutomationControl> ac (new AutomationControl(_session, al));
-		add_control(ac);
-		return ac;
-
-	} else {
-		//warning << "AutomationList " << parameter.to_string() << " not found for " << _name << endmsg;
-		return boost::shared_ptr<AutomationControl>();
+	if (al) {
+		_can_automate_list.insert (param);
+		automation_list_automation_state_changed (param, al->automation_state ()); // sync everything up
 	}
 }
 
-boost::shared_ptr<const AutomationControl>
-Automatable::control (ParamID parameter) const
-{
-	Controls::const_iterator i = _controls.find(parameter);
-
-	if (i != _controls.end()) {
-		return i->second;
-	} else {
-		//warning << "AutomationList " << parameter.to_string() << " not found for " << _name << endmsg;
-		return boost::shared_ptr<AutomationControl>();
-	}
-}
-
-
 string
-Automatable::describe_parameter (ParamID param)
+Automatable::describe_parameter (Evoral::Parameter param)
 {
 	/* derived classes like PluginInsert should override this */
 
-	if (param == ParamID(GainAutomation))
+	if (param == Evoral::Parameter(GainAutomation)) {
 		return _("Fader");
-	else if (param.type() == PanAutomation)
-		return (string_compose(_("Pan %1"), param.id()));
-	else if (param.type() == MidiCCAutomation)
-		return string_compose("CC %1", param.id());
-	else
-		return param.to_string();
-}
-
-void
-Automatable::can_automate (ParamID what)
-{
-	_can_automate_list.insert (what);
-}
-
-void
-Automatable::mark_automation_visible (ParamID what, bool yn)
-{
-	if (yn) {
-		_visible_controls.insert (what);
+	} else if (param.type() == TrimAutomation) {
+		return _("Trim");
+	} else if (param.type() == MuteAutomation) {
+		return _("Mute");
+	} else if (param.type() == MidiCCAutomation) {
+		return string_compose("Controller %1 [%2]", param.id(), int(param.channel()) + 1);
+	} else if (param.type() == MidiPgmChangeAutomation) {
+		return string_compose("Program [%1]", int(param.channel()) + 1);
+	} else if (param.type() == MidiPitchBenderAutomation) {
+		return string_compose("Bender [%1]", int(param.channel()) + 1);
+	} else if (param.type() == MidiChannelPressureAutomation) {
+		return string_compose("Pressure [%1]", int(param.channel()) + 1);
+#ifdef LV2_SUPPORT
+	} else if (param.type() == PluginPropertyAutomation) {
+		return string_compose("Property %1", URIMap::instance().id_to_uri(param.id()));
+#endif
 	} else {
-		set<ParamID>::iterator i;
-
-		if ((i = _visible_controls.find (what)) != _visible_controls.end()) {
-			_visible_controls.erase (i);
-		}
+		return EventTypeMap::instance().to_symbol(param);
 	}
 }
 
-bool
-Automatable::find_next_event (nframes_t now, nframes_t end, ControlEvent& next_event) const
+void
+Automatable::can_automate (Evoral::Parameter what)
 {
-	Controls::const_iterator li;	
-	AutomationList::TimeComparator cmp;
-
-	next_event.when = max_frames;
-	
-  	for (li = _controls.begin(); li != _controls.end(); ++li) {
-		
-		AutomationList::const_iterator i;
-		boost::shared_ptr<const AutomationList> alist (li->second->list());
-		ControlEvent cp (now, 0.0f);
-		
- 		for (i = lower_bound (alist->const_begin(), alist->const_end(), &cp, cmp); i != alist->const_end() && (*i)->when < end; ++i) {
- 			if ((*i)->when > now) {
- 				break; 
- 			}
- 		}
- 		
- 		if (i != alist->const_end() && (*i)->when < end) {
-			
- 			if ((*i)->when < next_event.when) {
- 				next_event.when = (*i)->when;
- 			}
- 		}
- 	}
-
- 	return next_event.when != max_frames;
+	_can_automate_list.insert (what);
 }
 
 /** \a legacy_param is used for loading legacy sessions where an object (IO, Panner)
@@ -265,17 +202,15 @@ Automatable::find_next_event (nframes_t now, nframes_t end, ControlEvent& next_e
  * pass that type and it will be used for the untyped AutomationList found.
  */
 int
-Automatable::set_automation_state (const XMLNode& node, ParamID legacy_param)
-{	
-	Glib::Mutex::Lock lm (_automation_lock);
+Automatable::set_automation_xml_state (const XMLNode& node, Evoral::Parameter legacy_param)
+{
+	Glib::Threads::Mutex::Lock lm (control_lock());
 
 	/* Don't clear controls, since some may be special derived Controllable classes */
 
-	_visible_controls.clear ();
-
 	XMLNodeList nlist = node.children();
 	XMLNodeIterator niter;
-	
+
 	for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 
 		/*if (sscanf ((*niter)->name().c_str(), "parameter-%" PRIu32, &param) != 1) {
@@ -285,114 +220,112 @@ Automatable::set_automation_state (const XMLNode& node, ParamID legacy_param)
 
 		if ((*niter)->name() == "AutomationList") {
 
-			const XMLProperty* id_prop = (*niter)->property("automation-id");
+			XMLProperty const * id_prop = (*niter)->property("automation-id");
+
+			Evoral::Parameter param = (id_prop
+					? EventTypeMap::instance().from_symbol(id_prop->value())
+					: legacy_param);
+
+			if (param.type() == NullAutomation) {
+				warning << "Automation has null type" << endl;
+				continue;
+                        }
 
-			ParamID param = (id_prop ? ParamID(id_prop->value()) : legacy_param);
-			
-			boost::shared_ptr<AutomationList> al (new AutomationList(**niter, param));
-			
 			if (!id_prop) {
 				warning << "AutomationList node without automation-id property, "
-					<< "using default: " << legacy_param.to_string() << endmsg;
-				al->set_param_id(legacy_param);
+					<< "using default: " << EventTypeMap::instance().to_symbol(legacy_param) << endmsg;
 			}
 
-			boost::shared_ptr<AutomationControl> existing = control(param);
-			if (existing)
-				existing->set_list(al);
-			else
-				add_control(boost::shared_ptr<AutomationControl>(new AutomationControl(_session, al)));
+			boost::shared_ptr<AutomationControl> existing = automation_control (param);
+
+			if (existing) {
+                                existing->alist()->set_state (**niter, 3000);
+			} else {
+                                boost::shared_ptr<Evoral::Control> newcontrol = control_factory(param);
+				add_control (newcontrol);
+                                boost::shared_ptr<AutomationList> al (new AutomationList(**niter, param));
+				newcontrol->set_list(al);
+			}
 
 		} else {
-			error << "Expected AutomationList node, got '" << (*niter)->name() << endmsg;
+			error << "Expected AutomationList node, got '" << (*niter)->name() << "'" << endmsg;
 		}
 	}
 
-	_last_automation_snapshot = 0;
-
 	return 0;
 }
 
 XMLNode&
-Automatable::get_automation_state ()
+Automatable::get_automation_xml_state ()
 {
-	Glib::Mutex::Lock lm (_automation_lock);
-	XMLNode* node = new XMLNode (X_("Automation"));
-	
-	if (_controls.empty()) {
+	Glib::Threads::Mutex::Lock lm (control_lock());
+	XMLNode* node = new XMLNode (Automatable::xml_node_name);
+
+	if (controls().empty()) {
 		return *node;
 	}
 
-	for (Controls::iterator li = _controls.begin(); li != _controls.end(); ++li) {
-		node->add_child_nocopy (li->second->list()->get_state ());
+	for (Controls::iterator li = controls().begin(); li != controls().end(); ++li) {
+		boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(li->second->list());
+		if (l && !l->empty()) {
+			node->add_child_nocopy (l->get_state ());
+		}
 	}
 
 	return *node;
 }
 
 void
-Automatable::clear_automation ()
+Automatable::set_parameter_automation_state (Evoral::Parameter param, AutoState s)
 {
-	Glib::Mutex::Lock lm (_automation_lock);
+	Glib::Threads::Mutex::Lock lm (control_lock());
 
-	for (Controls::iterator li = _controls.begin(); li != _controls.end(); ++li)
-		li->second->list()->clear();
-}
-	
-void
-Automatable::set_parameter_automation_state (ParamID param, AutoState s)
-{
-	Glib::Mutex::Lock lm (_automation_lock);
-	
-	boost::shared_ptr<AutomationControl> c = control (param, true);
+	boost::shared_ptr<AutomationControl> c = automation_control (param, true);
 
-	if (s != c->list()->automation_state()) {
-		c->list()->set_automation_state (s);
-		_session.set_dirty ();
+	if (c && (s != c->automation_state())) {
+		c->set_automation_state (s);
+		_a_session.set_dirty ();
+		AutomationStateChanged(); /* Emit signal */
 	}
 }
 
 AutoState
-Automatable::get_parameter_automation_state (ParamID param, bool lock)
+Automatable::get_parameter_automation_state (Evoral::Parameter param)
 {
 	AutoState result = Off;
 
-	if (lock)
-		_automation_lock.lock();
+	boost::shared_ptr<AutomationControl> c = automation_control(param);
 
-	boost::shared_ptr<AutomationControl> c = control(param);
-
-	if (c)
-		result = c->list()->automation_state();
-	
-	if (lock)
-		_automation_lock.unlock();
+	if (c) {
+		result = c->automation_state();
+	}
 
 	return result;
 }
 
 void
-Automatable::set_parameter_automation_style (ParamID param, AutoStyle s)
+Automatable::set_parameter_automation_style (Evoral::Parameter param, AutoStyle s)
 {
-	Glib::Mutex::Lock lm (_automation_lock);
-	
-	boost::shared_ptr<AutomationControl> c = control(param, true);
+	Glib::Threads::Mutex::Lock lm (control_lock());
 
-	if (s != c->list()->automation_style()) {
-		c->list()->set_automation_style (s);
-		_session.set_dirty ();
+	boost::shared_ptr<AutomationControl> c = automation_control(param, true);
+
+	if (c && (s != c->automation_style())) {
+		c->set_automation_style (s);
+		_a_session.set_dirty ();
 	}
 }
 
 AutoStyle
-Automatable::get_parameter_automation_style (ParamID param)
+Automatable::get_parameter_automation_style (Evoral::Parameter param)
 {
-	Glib::Mutex::Lock lm (_automation_lock);
+	Glib::Threads::Mutex::Lock lm (control_lock());
 
-	boost::shared_ptr<AutomationControl> c = control(param);
+	boost::shared_ptr<Evoral::Control> c = control(param);
+	boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 
 	if (c) {
-		return c->list()->automation_style();
+		return l->automation_style();
 	} else {
 		return Absolute; // whatever
 	}
@@ -401,20 +334,20 @@ Automatable::get_parameter_automation_style (ParamID param)
 void
 Automatable::protect_automation ()
 {
-	set<ParamID> automated_params;
-
-	what_has_automation (automated_params);
+	typedef set<Evoral::Parameter> ParameterSet;
+	const ParameterSet& automated_params = what_can_be_automated ();
 
-	for (set<ParamID>::iterator i = automated_params.begin(); i != automated_params.end(); ++i) {
+	for (ParameterSet::const_iterator i = automated_params.begin(); i != automated_params.end(); ++i) {
 
-		boost::shared_ptr<AutomationControl> c = control(*i);
+		boost::shared_ptr<Evoral::Control> c = control(*i);
+		boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 
-		switch (c->list()->automation_state()) {
+		switch (l->automation_state()) {
 		case Write:
-			c->list()->set_automation_state (Off);
+			l->set_automation_state (Off);
 			break;
 		case Touch:
-			c->list()->set_automation_state (Play);
+			l->set_automation_state (Play);
 			break;
 		default:
 			break;
@@ -423,32 +356,183 @@ Automatable::protect_automation ()
 }
 
 void
-Automatable::automation_snapshot (nframes_t now)
+Automatable::transport_located (framepos_t now)
 {
-	if (_last_automation_snapshot > now || (now - _last_automation_snapshot) > _session.automation_interval()) {
+	for (Controls::iterator li = controls().begin(); li != controls().end(); ++li) {
 
-		for (Controls::iterator i = _controls.begin(); i != _controls.end(); ++i) {
-			if (i->second->list()->automation_write()) {
-				i->second->list()->rt_add (now, i->second->user_value());
+		boost::shared_ptr<AutomationControl> c
+				= boost::dynamic_pointer_cast<AutomationControl>(li->second);
+		if (c) {
+                        boost::shared_ptr<AutomationList> l
+				= boost::dynamic_pointer_cast<AutomationList>(c->list());
+
+			if (l) {
+				l->start_write_pass (now);
 			}
 		}
-		
-		_last_automation_snapshot = now;
 	}
 }
 
 void
-Automatable::transport_stopped (nframes_t now)
+Automatable::transport_stopped (framepos_t now)
 {
-	for (Controls::iterator li = _controls.begin(); li != _controls.end(); ++li) {
-		
-		boost::shared_ptr<AutomationControl> c = li->second;
-		
-		c->list()->reposition_for_rt_add (now);
-
-		if (c->list()->automation_state() != Off) {
-			c->set_value(c->list()->eval(now));
+	for (Controls::iterator li = controls().begin(); li != controls().end(); ++li) {
+		boost::shared_ptr<AutomationControl> c =
+			boost::dynamic_pointer_cast<AutomationControl>(li->second);
+		if (!c) {
+			continue;
+		}
+
+		boost::shared_ptr<AutomationList> l =
+			boost::dynamic_pointer_cast<AutomationList>(c->list());
+		if (!l) {
+			continue;
+		}
+
+		/* Stop any active touch gesture just before we mark the write pass
+		   as finished.  If we don't do this, the transport can end up stopped with
+		   an AutomationList thinking that a touch is still in progress and,
+		   when the transport is re-started, a touch will magically
+		   be happening without it ever have being started in the usual way.
+		*/
+		const bool list_did_write = !l->in_new_write_pass ();
+
+		l->stop_touch (true, now);
+
+		c->commit_transaction (list_did_write);
+
+		l->write_pass_finished (now, Config->get_automation_thinning_factor ());
+
+		if (l->automation_state () == Write) {
+			l->set_automation_state (Touch);
 		}
+
+		if (l->automation_playback ()) {
+			c->set_value_unchecked (c->list ()->eval (now));
+		}
+	}
+}
+
+boost::shared_ptr<Evoral::Control>
+Automatable::control_factory(const Evoral::Parameter& param)
+{
+	Evoral::Control*                  control   = NULL;
+	bool                              make_list = true;
+	ParameterDescriptor               desc(param);
+	boost::shared_ptr<AutomationList> list;
+	if (param.type() >= MidiCCAutomation && param.type() <= MidiChannelPressureAutomation) {
+		MidiTrack* mt = dynamic_cast<MidiTrack*>(this);
+		if (mt) {
+			control = new MidiTrack::MidiControl(mt, param);
+			make_list = false;  // No list, this is region "automation"
+		}
+	} else if (param.type() == PluginAutomation) {
+		PluginInsert* pi = dynamic_cast<PluginInsert*>(this);
+		if (pi) {
+			pi->plugin(0)->get_parameter_descriptor(param.id(), desc);
+			control = new PluginInsert::PluginControl(pi, param, desc);
+		} else {
+			warning << "PluginAutomation for non-Plugin" << endl;
+		}
+	} else if (param.type() == PluginPropertyAutomation) {
+		PluginInsert* pi = dynamic_cast<PluginInsert*>(this);
+		if (pi) {
+			desc = pi->plugin(0)->get_property_descriptor(param.id());
+			if (desc.datatype != Variant::NOTHING) {
+				if (!Variant::type_is_numeric(desc.datatype)) {
+					make_list = false;  // Can't automate non-numeric data yet
+				} else {
+					list = boost::shared_ptr<AutomationList>(new AutomationList(param, desc));
+				}
+				control = new PluginInsert::PluginPropertyControl(pi, param, desc, list);
+			}
+		} else {
+			warning << "PluginPropertyAutomation for non-Plugin" << endl;
+		}
+	} else if (param.type() == GainAutomation) {
+		control = new GainControl(_a_session, param);
+	} else if (param.type() == TrimAutomation) {
+		control = new GainControl(_a_session, param);
+	} else if (param.type() == PanAzimuthAutomation || param.type() == PanWidthAutomation || param.type() == PanElevationAutomation) {
+		Pannable* pannable = dynamic_cast<Pannable*>(this);
+		if (pannable) {
+			control = new PanControllable (_a_session, pannable->describe_parameter (param), pannable, param);
+		} else {
+			warning << "PanAutomation for non-Pannable" << endl;
+		}
+	}
+
+	if (make_list && !list) {
+		list = boost::shared_ptr<AutomationList>(new AutomationList(param, desc));
+	}
+
+	if (!control) {
+		control = new AutomationControl(_a_session, param, desc, list);
 	}
+
+	return boost::shared_ptr<Evoral::Control>(control);
+}
+
+boost::shared_ptr<AutomationControl>
+Automatable::automation_control (const Evoral::Parameter& id, bool create)
+{
+	return boost::dynamic_pointer_cast<AutomationControl>(Evoral::ControlSet::control(id, create));
 }
 
+boost::shared_ptr<const AutomationControl>
+Automatable::automation_control (const Evoral::Parameter& id) const
+{
+	return boost::dynamic_pointer_cast<const AutomationControl>(Evoral::ControlSet::control(id));
+}
+
+void
+Automatable::clear_controls ()
+{
+	_control_connections.drop_connections ();
+	ControlSet::clear_controls ();
+}
+
+string
+Automatable::value_as_string (boost::shared_ptr<AutomationControl> ac) const
+{
+	return ARDOUR::value_as_string(ac->desc(), ac->get_value());
+}
+
+bool
+Automatable::find_next_event (double now, double end, Evoral::ControlEvent& next_event, bool only_active) const
+{
+	Controls::const_iterator li;
+
+	next_event.when = std::numeric_limits<double>::max();
+
+	for (li = _controls.begin(); li != _controls.end(); ++li) {
+		boost::shared_ptr<AutomationControl> c
+			= boost::dynamic_pointer_cast<AutomationControl>(li->second);
+
+		if (only_active && (!c || !c->automation_playback())) {
+			continue;
+		}
+
+		Evoral::ControlList::const_iterator i;
+		boost::shared_ptr<const Evoral::ControlList> alist (li->second->list());
+		Evoral::ControlEvent cp (now, 0.0f);
+		if (!alist) {
+			continue;
+		}
+
+		for (i = lower_bound (alist->begin(), alist->end(), &cp, Evoral::ControlList::time_comparator);
+		     i != alist->end() && (*i)->when < end; ++i) {
+			if ((*i)->when > now) {
+				break;
+			}
+		}
+
+		if (i != alist->end() && (*i)->when < end) {
+			if ((*i)->when < next_event.when) {
+				next_event.when = (*i)->when;
+			}
+		}
+	}
+
+	return next_event.when != std::numeric_limits<double>::max();
+}