X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Froute_group.cc;h=7b24a88114d5eca3b4941799f8aed41019e754f2;hb=2e3e18320489c0da6e3172af4c6df6ca8d693c29;hp=f33a7f1f408763ada05943ec91bb9cdd9ea3c046;hpb=b99b507be9cb290ff9fc2d6197af045964eb68a2;p=ardour.git

diff --git a/libs/ardour/route_group.cc b/libs/ardour/route_group.cc
index f33a7f1f40..7b24a88114 100644
--- a/libs/ardour/route_group.cc
+++ b/libs/ardour/route_group.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000-2002 Paul Davis
+    Copyright (C) 2000-2016 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
@@ -17,122 +17,266 @@
 
 */
 
-#define __STDC_FORMAT_MACROS
 #include <inttypes.h>
 
 #include <algorithm>
 
-#include <sigc++/bind.h>
-
 #include "pbd/error.h"
 #include "pbd/enumwriter.h"
+#include "pbd/strsplit.h"
+#include "pbd/types_convert.h"
+#include "pbd/debug.h"
 
 #include "ardour/amp.h"
-#include "ardour/route_group.h"
 #include "ardour/audio_track.h"
-#include "ardour/audio_diskstream.h"
-#include "ardour/configuration.h"
+#include "ardour/debug.h"
+#include "ardour/monitor_control.h"
+#include "ardour/route.h"
+#include "ardour/route_group.h"
 #include "ardour/session.h"
+#include "ardour/vca.h"
+#include "ardour/vca_manager.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace ARDOUR;
-using namespace sigc;
+using namespace PBD;
 using namespace std;
 
-RouteGroup::RouteGroup (Session& s, const string &n, Flag f, Property p)
-	: _session (s), _name (n), _flags (f), _properties (Property (p))
-{
+namespace ARDOUR {
+	namespace Properties {
+		PropertyDescriptor<bool> active;
+		PropertyDescriptor<bool> group_relative;
+		PropertyDescriptor<bool> group_gain;
+		PropertyDescriptor<bool> group_mute;
+		PropertyDescriptor<bool> group_solo;
+		PropertyDescriptor<bool> group_recenable;
+		PropertyDescriptor<bool> group_select;
+		PropertyDescriptor<bool> group_route_active;
+		PropertyDescriptor<bool> group_color;
+		PropertyDescriptor<bool> group_monitoring;
+		PropertyDescriptor<int32_t> group_master_number;
+	}
 }
 
 void
-RouteGroup::set_name (string str)
+RouteGroup::make_property_quarks ()
 {
-	_name = str;
-	_session.set_dirty ();
-	FlagsChanged (0); /* EMIT SIGNAL */
+	Properties::active.property_id = g_quark_from_static_string (X_("active"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for active = %1\n",	Properties::active.property_id));
+
+        Properties::group_relative.property_id = g_quark_from_static_string (X_("relative"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for relative = %1\n",	Properties::group_relative.property_id));
+	Properties::group_gain.property_id = g_quark_from_static_string (X_("gain"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for gain = %1\n",	Properties::group_gain.property_id));
+	Properties::group_mute.property_id = g_quark_from_static_string (X_("mute"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for mute = %1\n",	Properties::group_mute.property_id));
+	Properties::group_solo.property_id = g_quark_from_static_string (X_("solo"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for solo = %1\n",	Properties::group_solo.property_id));
+	Properties::group_recenable.property_id = g_quark_from_static_string (X_("recenable"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for recenable = %1\n",	Properties::group_recenable.property_id));
+	Properties::group_select.property_id = g_quark_from_static_string (X_("select"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for select = %1\n",	Properties::group_select.property_id));
+	Properties::group_route_active.property_id = g_quark_from_static_string (X_("route-active"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for route-active = %1\n", Properties::group_route_active.property_id));
+	Properties::group_color.property_id = g_quark_from_static_string (X_("color"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for color = %1\n", Properties::group_color.property_id));
+	Properties::group_monitoring.property_id = g_quark_from_static_string (X_("monitoring"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for monitoring = %1\n", Properties::group_monitoring.property_id));
+	Properties::group_master_number.property_id = g_quark_from_static_string (X_("group-master-number"));
+        DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for group-master-number = %1\n", Properties::group_master_number.property_id));
 }
 
-int
-RouteGroup::add (Route *r)
+#define ROUTE_GROUP_DEFAULT_PROPERTIES  _relative (Properties::group_relative, true) \
+	, _active (Properties::active, true) \
+	, _hidden (Properties::hidden, false) \
+	, _gain (Properties::group_gain, true) \
+	, _mute (Properties::group_mute, true) \
+	, _solo (Properties::group_solo, true) \
+	, _recenable (Properties::group_recenable, true) \
+	, _select (Properties::group_select, true) \
+	, _route_active (Properties::group_route_active, true) \
+	, _color (Properties::group_color, true) \
+	, _monitoring (Properties::group_monitoring, true) \
+	, _group_master_number (Properties::group_master_number, -1)
+
+RouteGroup::RouteGroup (Session& s, const string &n)
+	: SessionObject (s, n)
+	, routes (new RouteList)
+	, ROUTE_GROUP_DEFAULT_PROPERTIES
+	, _solo_group (new ControlGroup (SoloAutomation))
+	, _mute_group (new ControlGroup (MuteAutomation))
+	, _rec_enable_group (new ControlGroup (RecEnableAutomation))
+	, _gain_group (new GainControlGroup ())
+	, _monitoring_group (new ControlGroup (MonitoringAutomation))
+	, _rgba (0)
+	, _used_to_share_gain (false)
 {
-	routes.push_back (r);
-	r->GoingAway.connect (sigc::bind (mem_fun (*this, &RouteGroup::remove_when_going_away), r));
-	_session.set_dirty ();
-	changed (); /* EMIT SIGNAL */
-	return 0;
+	_xml_node_name = X_("RouteGroup");
+
+	add_property (_relative);
+	add_property (_active);
+	add_property (_hidden);
+	add_property (_gain);
+	add_property (_mute);
+	add_property (_solo);
+	add_property (_recenable);
+	add_property (_select);
+	add_property (_route_active);
+	add_property (_color);
+	add_property (_monitoring);
+	add_property (_group_master_number);
 }
 
-void
-RouteGroup::remove_when_going_away (Route *r)
+RouteGroup::~RouteGroup ()
 {
-	remove (r);
+	_solo_group->clear ();
+	_mute_group->clear ();
+	_gain_group->clear ();
+	_rec_enable_group->clear ();
+	_monitoring_group->clear ();
+
+	boost::shared_ptr<VCA> vca (group_master.lock());
+
+	for (RouteList::iterator i = routes->begin(); i != routes->end();) {
+		RouteList::iterator tmp = i;
+		++tmp;
+
+		(*i)->set_route_group (0);
+
+		if (vca) {
+			(*i)->unassign (vca);
+		}
+
+		i = tmp;
+	}
 }
 
+/** Add a route to a group.  Adding a route which is already in the group is allowed; nothing will happen.
+ *  @param r Route to add.
+ */
 int
-RouteGroup::remove (Route *r)
+RouteGroup::add (boost::shared_ptr<Route> r)
 {
-	list<Route *>::iterator i;
+	if (r->is_master()) {
+		return 0;
+	}
 
-	if ((i = find (routes.begin(), routes.end(), r)) != routes.end()) {
-		routes.erase (i);
-		_session.set_dirty ();
-		changed (); /* EMIT SIGNAL */
+	if (find (routes->begin(), routes->end(), r) != routes->end()) {
 		return 0;
 	}
-	return -1;
-}
 
+	if (r->route_group()) {
+		r->route_group()->remove (r);
+	}
+
+	routes->push_back (r);
 
-gain_t
-RouteGroup::get_min_factor(gain_t factor)
-{
-	gain_t g;
+	_solo_group->add_control (r->solo_control());
+	_mute_group->add_control (r->mute_control());
+	_gain_group->add_control (r->gain_control());
+	boost::shared_ptr<Track> trk = boost::dynamic_pointer_cast<Track> (r);
+	if (trk) {
+		_rec_enable_group->add_control (trk->rec_enable_control());
+		_monitoring_group->add_control (trk->monitoring_control());
+	}
 
-	for (list<Route *>::iterator i = routes.begin(); i != routes.end(); i++) {
-		g = (*i)->amp()->gain();
+	r->set_route_group (this);
+	r->DropReferences.connect_same_thread (*this, boost::bind (&RouteGroup::remove_when_going_away, this, boost::weak_ptr<Route> (r)));
 
-		if ( (g+g*factor) >= 0.0f)
-			continue;
+	boost::shared_ptr<VCA> vca (group_master.lock());
 
-		if ( g <= 0.0000003f )
-			return 0.0f;
+	if (vca) {
+		r->assign (vca);
+	}
 
-		factor = 0.0000003f/g - 1.0f;
+	_session.set_dirty ();
+	RouteAdded (this, boost::weak_ptr<Route> (r)); /* EMIT SIGNAL */
+	return 0;
+}
+
+void
+RouteGroup::remove_when_going_away (boost::weak_ptr<Route> wr)
+{
+	boost::shared_ptr<Route> r (wr.lock());
+
+	if (r) {
+		remove (r);
 	}
-	return factor;
 }
 
-gain_t
-RouteGroup::get_max_factor(gain_t factor)
+int
+RouteGroup::remove (boost::shared_ptr<Route> r)
 {
-	gain_t g;
+	RouteList::iterator i;
+
+	if ((i = find (routes->begin(), routes->end(), r)) != routes->end()) {
+		r->set_route_group (0);
+
+		boost::shared_ptr<VCA> vca = group_master.lock();
+
+		if (vca) {
+			r->unassign (vca);
+		}
 
-	for (list<Route *>::iterator i = routes.begin(); i != routes.end(); i++) {
-		g = (*i)->amp()->gain();
+		_solo_group->remove_control (r->solo_control());
+		_mute_group->remove_control (r->mute_control());
+		_gain_group->remove_control (r->gain_control());
+		boost::shared_ptr<Track> trk = boost::dynamic_pointer_cast<Track> (r);
+		if (trk) {
+			_rec_enable_group->remove_control (trk->rec_enable_control());
+			_monitoring_group->remove_control (trk->monitoring_control());
+		}
+		routes->erase (i);
+		_session.set_dirty ();
+		RouteRemoved (this, boost::weak_ptr<Route> (r)); /* EMIT SIGNAL */
+		return 0;
+	}
 
-		// if the current factor woulnd't raise this route above maximum
-		if ( (g+g*factor) <= 1.99526231f)
-			continue;
+	return -1;
+}
 
-		// if route gain is already at peak, return 0.0f factor
-	    if (g>=1.99526231f)
-			return 0.0f;
+void
+RouteGroup::set_rgba (uint32_t color) {
+	_rgba = color;
 
-		// factor is calculated so that it would raise current route to max
-		factor = 1.99526231f/g - 1.0f;
+	PBD::PropertyChange change;
+	change.add (Properties::color);
+	PropertyChanged (change);
+
+	if (!is_color ()) {
+		return;
 	}
 
-	return factor;
+	for (RouteList::const_iterator i = routes->begin(); i != routes->end(); ++i) {
+		(*i)->presentation_info().PropertyChanged (Properties::color);
+	}
 }
 
 XMLNode&
-RouteGroup::get_state (void)
+RouteGroup::get_state ()
 {
 	XMLNode *node = new XMLNode ("RouteGroup");
-	node->add_property ("name", _name);
-	node->add_property ("flags", enum_2_string (_flags));
-	node->add_property ("properties", enum_2_string (_properties));
+
+	node->set_property ("id", id());
+	node->set_property ("rgba", _rgba);
+	node->set_property ("used-to-share-gain", _used_to_share_gain);
+	if (_subgroup_bus) {
+		node->set_property ("subgroup-bus", _subgroup_bus->id ());
+	}
+
+	add_properties (*node);
+
+	if (!routes->empty()) {
+		stringstream str;
+
+		for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
+			str << (*i)->id () << ' ';
+		}
+
+		node->set_property ("routes", str.str());
+	}
+
 	return *node;
 }
 
@@ -143,103 +287,239 @@ RouteGroup::set_state (const XMLNode& node, int version)
 		return set_state_2X (node, version);
 	}
 
-	const XMLProperty *prop;
+	set_id (node);
+	set_values (node);
+	node.get_property ("rgba", _rgba);
+	node.get_property ("used-to-share-gain", _used_to_share_gain);
+
+	std::string routes;
+	if (node.get_property ("routes", routes)) {
+		stringstream str (routes);
+		vector<string> ids;
+		split (str.str(), ids, ' ');
 
-	if ((prop = node.property ("name")) != 0) {
-		_name = prop->value();
+		for (vector<string>::iterator i = ids.begin(); i != ids.end(); ++i) {
+			PBD::ID id (*i);
+			boost::shared_ptr<Route> r = _session.route_by_id (id);
+
+			if (r) {
+				add (r);
+			}
+		}
 	}
 
-	if ((prop = node.property ("flags")) != 0) {
-		_flags = Flag (string_2_enum (prop->value(), _flags));
+	PBD::ID subgroup_id (0);
+	if (node.get_property ("subgroup-bus", subgroup_id)) {
+		boost::shared_ptr<Route> r = _session.route_by_id (subgroup_id);
+		if (r) {
+			_subgroup_bus = r;
+		}
 	}
 
-	if ((prop = node.property ("properties")) != 0) {
-		_properties = Property (string_2_enum (prop->value(), _properties));
+	if (_group_master_number.val() > 0) {
+		boost::shared_ptr<VCA> vca = _session.vca_manager().vca_by_number (_group_master_number.val());
+		if (vca) {
+			/* no need to do the assignment because slaves will
+			   handle that themselves. But we can set group_master
+			   to use with future assignments of newly added routes.
+			*/
+			group_master = vca;
+		}
 	}
 
+	push_to_groups ();
+
 	return 0;
 }
 
 int
 RouteGroup::set_state_2X (const XMLNode& node, int /*version*/)
 {
-	XMLProperty const * prop;
+	set_values (node);
 
-	if ((prop = node.property ("name")) != 0) {
-		_name = prop->value();
+	if (node.name() == "MixGroup") {
+		_gain = true;
+		_mute = true;
+		_solo = true;
+		_recenable = true;
+		_route_active = true;
+		_color = false;
+	} else if (node.name() == "EditGroup") {
+		_gain = false;
+		_mute = false;
+		_solo = false;
+		_recenable = false;
+		_route_active = false;
+		_color = false;
 	}
 
-	if ((prop = node.property ("flags")) != 0) {
-		_flags = Flag (string_2_enum (prop->value(), _flags));
+	push_to_groups ();
+
+	return 0;
+}
+
+void
+RouteGroup::set_gain (bool yn)
+{
+	if (is_gain() == yn) {
+		return;
 	}
 
-	if (node.name() == "MixGroup") {
-		_properties = Property (Gain | Mute | Solo | RecEnable);
-	} else if (node.name() == "EditGroup") {
-		_properties = Property (Select | Edit);
+	_gain = yn;
+	_gain_group->set_active (yn);
+
+	send_change (PropertyChange (Properties::group_gain));
+}
+
+void
+RouteGroup::set_mute (bool yn)
+{
+	if (is_mute() == yn) {
+		return;
 	}
+	_mute = yn;
+	_mute_group->set_active (yn);
 
-	return 0;
+	send_change (PropertyChange (Properties::group_mute));
 }
 
 void
-RouteGroup::set_active (bool yn, void *src)
+RouteGroup::set_solo (bool yn)
 {
-	if (is_active() == yn) {
+	if (is_solo() == yn) {
 		return;
 	}
-	if (yn) {
-		_flags = Flag (_flags | Active);
-	} else {
-		_flags = Flag (_flags & ~Active);
+	_solo = yn;
+	_solo_group->set_active (yn);
+
+	send_change (PropertyChange (Properties::group_solo));
+}
+
+void
+RouteGroup::set_recenable (bool yn)
+{
+	if (is_recenable() == yn) {
+		return;
 	}
-	_session.set_dirty ();
-	FlagsChanged (src); /* EMIT SIGNAL */
+	_recenable = yn;
+	_rec_enable_group->set_active (yn);
+	send_change (PropertyChange (Properties::group_recenable));
 }
 
 void
-RouteGroup::set_relative (bool yn, void *src)
+RouteGroup::set_select (bool yn)
+{
+	if (is_select() == yn) {
+		return;
+	}
+	_select = yn;
+	send_change (PropertyChange (Properties::group_select));
+}
 
+void
+RouteGroup::set_route_active (bool yn)
 {
-	if (is_relative() == yn) {
+	if (is_route_active() == yn) {
 		return;
 	}
-	if (yn) {
-		_flags = Flag (_flags | Relative);
-	} else {
-		_flags = Flag (_flags & ~Relative);
+	_route_active = yn;
+	send_change (PropertyChange (Properties::group_route_active));
+}
+
+void
+RouteGroup::set_color (bool yn)
+{
+	if (is_color() == yn) {
+		return;
+	}
+	_color = yn;
+
+	send_change (PropertyChange (Properties::group_color));
+
+	/* This is a bit of a hack, but this might change
+	   our route's effective color, so emit gui_changed
+	   for our routes.
+	*/
+
+	for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
+		(*i)->gui_changed (X_("color"), this);
+	}
+}
+
+void
+RouteGroup::set_monitoring (bool yn)
+{
+	if (is_monitoring() == yn) {
+		return;
+	}
+
+	_monitoring = yn;
+	_monitoring_group->set_active (yn);
+
+	send_change (PropertyChange (Properties::group_monitoring));
+
+	_session.set_dirty ();
+}
+
+void
+RouteGroup::set_active (bool yn, void* /*src*/)
+{
+	if (is_active() == yn) {
+		return;
 	}
+
+	_active = yn;
+
+	push_to_groups ();
+
+	send_change (PropertyChange (Properties::active));
 	_session.set_dirty ();
-	FlagsChanged (src); /* EMIT SIGNAL */
 }
 
 void
-RouteGroup::set_hidden (bool yn, void *src)
+RouteGroup::set_relative (bool yn, void* /*src*/)
+{
+	if (is_relative() == yn) {
+		return;
+	}
+
+	_relative = yn;
 
+	push_to_groups ();
+
+	send_change (PropertyChange (Properties::group_relative));
+	_session.set_dirty ();
+}
+
+void
+RouteGroup::set_hidden (bool yn, void* /*src*/)
 {
 	if (is_hidden() == yn) {
 		return;
 	}
+
 	if (yn) {
-		_flags = Flag (_flags | Hidden);
+		_hidden = true;
 		if (Config->get_hiding_groups_deactivates_groups()) {
-			_flags = Flag (_flags & ~Active);
+			_active = false;
 		}
 	} else {
-		_flags = Flag (_flags & ~Hidden);
+		_hidden = false;
 		if (Config->get_hiding_groups_deactivates_groups()) {
-			_flags = Flag (_flags | Active);
+			_active = true;
 		}
 	}
+
+	send_change (Properties::hidden);
+
 	_session.set_dirty ();
-	FlagsChanged (src); /* EMIT SIGNAL */
 }
 
 void
-RouteGroup::audio_track_group (set<AudioTrack*>& ats)
+RouteGroup::audio_track_group (set<boost::shared_ptr<AudioTrack> >& ats)
 {
-	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
-		AudioTrack* at = dynamic_cast<AudioTrack*>(*i);
+	for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
+		boost::shared_ptr<AudioTrack> at = boost::dynamic_pointer_cast<AudioTrack>(*i);
 		if (at) {
 			ats.insert (at);
 		}
@@ -247,54 +527,180 @@ RouteGroup::audio_track_group (set<AudioTrack*>& ats)
 }
 
 void
-RouteGroup::make_subgroup ()
+RouteGroup::make_subgroup (bool aux, Placement placement)
 {
 	RouteList rl;
 	uint32_t nin = 0;
 
 	/* since we don't do MIDI Busses yet, check quickly ... */
 
-	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
+	for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
 		if ((*i)->output()->n_ports().n_midi() != 0) {
-			PBD::info << _("You cannot subgroup MIDI tracks at this time") << endmsg;
+			PBD::warning << _("You cannot subgroup MIDI tracks at this time") << endmsg;
 			return;
 		}
 	}
 
-	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
+	for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
+		if (!aux && nin != 0 && nin != (*i)->output()->n_ports().n_audio()) {
+			PBD::warning << _("You cannot subgroup tracks with different number of outputs at this time.") << endmsg;
+			return;
+		}
 		nin = max (nin, (*i)->output()->n_ports().n_audio());
 	}
 
 	try {
-		/* use master bus etc. to determine default nouts */
-		rl = _session.new_audio_route (false, nin, 2, 0, 1);
+		/* use master bus etc. to determine default nouts.
+		 *
+		 * (since tracks can't have fewer outs than ins,
+		 * "nin" currently defines the number of outpus if nin > 2)
+		 */
+		rl = _session.new_audio_route (nin, 2, 0, 1, string(), PresentationInfo::AudioBus, PresentationInfo::max_order);
 	} catch (...) {
 		return;
 	}
 
-	subgroup_bus = rl.front();
-	subgroup_bus->set_name (_name);
+	_subgroup_bus = rl.front();
+	_subgroup_bus->set_name (_name);
 
-	boost::shared_ptr<Bundle> bundle = subgroup_bus->input()->bundle ();
+	if (aux) {
 
-	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
-		(*i)->output()->disconnect (this);
-		(*i)->output()->connect_ports_to_bundle (bundle, this);
+		_session.add_internal_sends (_subgroup_bus, placement, routes);
+
+	} else {
+
+		boost::shared_ptr<Bundle> bundle = _subgroup_bus->input()->bundle ();
+
+		for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
+			(*i)->output()->disconnect (this);
+			(*i)->output()->connect_ports_to_bundle (bundle, false, this);
+		}
 	}
 }
 
 void
 RouteGroup::destroy_subgroup ()
 {
-	if (!subgroup_bus) {
+	if (!_subgroup_bus) {
 		return;
 	}
 
-	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
+	for (RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
 		(*i)->output()->disconnect (this);
 		/* XXX find a new bundle to connect to */
 	}
 
-	_session.remove_route (subgroup_bus);
-	subgroup_bus.reset ();
+	_session.remove_route (_subgroup_bus);
+	_subgroup_bus.reset ();
+}
+
+bool
+RouteGroup::has_subgroup() const
+{
+	return _subgroup_bus != 0;
+}
+
+bool
+RouteGroup::enabled_property (PBD::PropertyID prop)
+{
+	OwnedPropertyList::iterator i = _properties->find (prop);
+	if (i == _properties->end()) {
+		return false;
+	}
+
+	return dynamic_cast<const PropertyTemplate<bool>* > (i->second)->val ();
+}
+
+void
+RouteGroup::post_set (PBD::PropertyChange const &)
+{
+	push_to_groups ();
+}
+
+void
+RouteGroup::push_to_groups ()
+{
+	if (is_relative()) {
+		_gain_group->set_mode (ControlGroup::Mode (_gain_group->mode()|ControlGroup::Relative));
+	} else {
+		_gain_group->set_mode (ControlGroup::Mode (_gain_group->mode()&~ControlGroup::Relative));
+	}
+
+	if (_active) {
+		_gain_group->set_active (is_gain());
+		_solo_group->set_active (is_solo());
+		_mute_group->set_active (is_mute());
+		_rec_enable_group->set_active (is_recenable());
+		_monitoring_group->set_active (is_monitoring());
+	} else {
+		_gain_group->set_active (false);
+		_solo_group->set_active (false);
+		_mute_group->set_active (false);
+
+		_rec_enable_group->set_active (false);
+		_monitoring_group->set_active (false);
+	}
+}
+
+void
+RouteGroup::assign_master (boost::shared_ptr<VCA> master)
+{
+	if (!routes || routes->empty()) {
+		return;
+	}
+
+	boost::shared_ptr<Route> front = routes->front ();
+
+	if (front->slaved_to (master)) {
+		return;
+	}
+
+	for (RouteList::iterator r = routes->begin(); r != routes->end(); ++r) {
+		(*r)->assign (master);
+	}
+
+	group_master = master;
+	_group_master_number = master->number();
+
+	_used_to_share_gain = is_gain ();
+	set_gain (false);
+}
+
+void
+RouteGroup::unassign_master (boost::shared_ptr<VCA> master)
+{
+	if (!routes || routes->empty()) {
+		return;
+	}
+
+	boost::shared_ptr<Route> front = routes->front ();
+
+	if (!front->slaved_to (master)) {
+		return;
+	}
+
+	for (RouteList::iterator r = routes->begin(); r != routes->end(); ++r) {
+		(*r)->unassign (master);
+	}
+
+	group_master.reset ();
+	_group_master_number = -1;
+
+	set_gain (_used_to_share_gain);
+}
+
+bool
+RouteGroup::slaved () const
+{
+	if (!routes || routes->empty()) {
+		return false;
+	}
+
+	return routes->front()->slaved ();
+}
+
+bool
+RouteGroup::has_control_master() const
+{
+	return group_master.lock() != 0;
 }