rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 213 insertions, 0 deletions

diff --git a/libs/ardour/route_group.cc b/libs/ardour/route_group.cc
new file mode 100644
index 0000000000..f22deb5dbf
--- /dev/null
+++ b/libs/ardour/route_group.cc
@@ -0,0 +1,213 @@
+/*
+    Copyright (C) 2000-2002 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
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include <algorithm>
+
+#include <sigc++/bind.h>
+
+#include <pbd/error.h>
+#include <pbd/enumwriter.h>
+
+#include <ardour/route_group.h>
+#include <ardour/audio_track.h>
+#include <ardour/audio_diskstream.h>
+#include <ardour/configuration.h>
+
+using namespace ARDOUR;
+using namespace sigc;
+using namespace std;
+
+RouteGroup::RouteGroup (Session& s, const string &n, Flag f)
+	: _session (s), _name (n), _flags (f) 
+{
+}
+
+void
+RouteGroup::set_name (string str)
+{
+	_name = str;
+	_session.set_dirty ();
+	FlagsChanged (0); /* EMIT SIGNAL */
+}
+
+int
+RouteGroup::add (Route *r)
+{
+	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;
+}
+
+void
+RouteGroup::remove_when_going_away (Route *r)
+{
+	remove (r);
+}
+    
+int
+RouteGroup::remove (Route *r) 
+{
+	list<Route *>::iterator i;
+
+	if ((i = find (routes.begin(), routes.end(), r)) != routes.end()) {
+		routes.erase (i);
+		_session.set_dirty ();
+		changed (); /* EMIT SIGNAL */
+		return 0;
+	}
+	return -1;
+}
+
+
+gain_t
+RouteGroup::get_min_factor(gain_t factor)
+{
+	gain_t g;
+	
+	for (list<Route *>::iterator i = routes.begin(); i != routes.end(); i++) {
+		g = (*i)->gain();
+
+		if ( (g+g*factor) >= 0.0f)
+			continue;
+
+		if ( g <= 0.0000003f )
+			return 0.0f;
+		
+		factor = 0.0000003f/g - 1.0f;
+	}	
+	return factor;
+}
+
+gain_t
+RouteGroup::get_max_factor(gain_t factor)
+{
+	gain_t g;
+	
+	for (list<Route *>::iterator i = routes.begin(); i != routes.end(); i++) {
+		g = (*i)->gain();
+		
+		// if the current factor woulnd't raise this route above maximum
+		if ( (g+g*factor) <= 1.99526231f) 
+			continue;
+		
+		// if route gain is already at peak, return 0.0f factor
+	    if (g>=1.99526231f)
+			return 0.0f;
+
+		// factor is calculated so that it would raise current route to max
+		factor = 1.99526231f/g - 1.0f;
+	}
+
+	return factor;
+}
+
+XMLNode&
+RouteGroup::get_state (void)
+{
+	XMLNode *node = new XMLNode ("RouteGroup");
+	node->add_property ("name", _name);
+	node->add_property ("flags", enum_2_string (_flags));
+	return *node;
+}
+
+int 
+RouteGroup::set_state (const XMLNode& node)
+{
+	const XMLProperty *prop;
+
+	if ((prop = node.property ("name")) != 0) {
+		_name = prop->value();
+	}
+
+	if ((prop = node.property ("flags")) != 0) {
+		_flags = Flag (string_2_enum (prop->value(), _flags));
+	}
+
+	return 0;
+}
+
+void
+RouteGroup::set_active (bool yn, void *src)
+{
+	if (is_active() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags = Flag (_flags | Active);
+	} else {
+		_flags = Flag (_flags & ~Active);
+	}
+	_session.set_dirty ();
+	FlagsChanged (src); /* EMIT SIGNAL */
+}
+
+void
+RouteGroup::set_relative (bool yn, void *src)
+
+{
+	if (is_relative() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags = Flag (_flags | Relative);
+	} else {
+		_flags = Flag (_flags & ~Relative);
+	}
+	_session.set_dirty ();
+	FlagsChanged (src); /* EMIT SIGNAL */
+}
+
+void
+RouteGroup::set_hidden (bool yn, void *src)
+
+{
+	if (is_hidden() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags = Flag (_flags | Hidden);
+		if (Config->get_hiding_groups_deactivates_groups()) {
+			_flags = Flag (_flags & ~Active);
+		}
+	} else {
+         	_flags = Flag (_flags & ~Hidden);
+		if (Config->get_hiding_groups_deactivates_groups()) {
+			_flags = Flag (_flags | Active);
+		}
+	}
+	_session.set_dirty ();
+	FlagsChanged (src); /* EMIT SIGNAL */
+}
+
+void
+RouteGroup::audio_track_group (set<AudioTrack*>& ats) 
+{	
+	for (list<Route*>::iterator i = routes.begin(); i != routes.end(); ++i) {
+		AudioTrack* at = dynamic_cast<AudioTrack*>(*i);
+		if (at) {
+			ats.insert (at);
+		}
+	}
+}
+