libardour added.

git-svn-id: svn://localhost/trunk/ardour2@17 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 184 insertions, 0 deletions

diff --git a/libs/ardour/route_group.cc b/libs/ardour/route_group.cc
new file mode 100644
index 0000000000..225224e684
--- /dev/null
+++ b/libs/ardour/route_group.cc
@@ -0,0 +1,184 @@
+/*
+    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.
+
+    $Id$
+*/
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include <algorithm>
+
+#include <sigc++/bind.h>
+
+#include <pbd/error.h>
+
+#include <ardour/route_group.h>
+#include <ardour/diskstream.h>
+#include <ardour/configuration.h>
+
+using namespace ARDOUR;
+using namespace sigc;
+
+int
+RouteGroup::add (Route *r)
+{
+	routes.push_back (r);
+	r->GoingAway.connect (sigc::bind (mem_fun (*this, &RouteGroup::remove_when_going_away), r));
+	 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);
+		 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)
+{
+	char buf[32];
+	XMLNode *node = new XMLNode ("RouteGroup");
+	node->add_property ("name", _name);
+	snprintf (buf, sizeof (buf), "%" PRIu32, (uint32_t) _flags);
+	node->add_property ("flags", buf);
+	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 = atoi (prop->value().c_str());
+	}
+
+	return 0;
+}
+
+void
+RouteGroup::set_active (bool yn, void *src)
+
+{
+	if (is_active() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags |= Active;
+	} else {
+		_flags &= ~Active;
+	}
+	 FlagsChanged (src); /* EMIT SIGNAL */
+}
+
+void
+RouteGroup::set_relative (bool yn, void *src)
+
+{
+	if (is_relative() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags |= Relative;
+	} else {
+		_flags &= ~Relative;
+	}
+	 FlagsChanged (src); /* EMIT SIGNAL */
+}
+
+void
+RouteGroup::set_hidden (bool yn, void *src)
+
+{
+	if (is_hidden() == yn) {
+		return;
+	}
+	if (yn) {
+		_flags |= Hidden;
+		if (Config->does_hiding_groups_deactivates_groups()) {
+			_flags &= ~Active;
+		}
+	} else {
+         	_flags &= ~Hidden;
+		if (Config->does_hiding_groups_deactivates_groups()) {
+			_flags |= Active;
+		}
+	}
+	 FlagsChanged (src); /* EMIT SIGNAL */
+}