2 Copyright (C) 2007 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <ardour/automation_control.h>
23 #include <ardour/session.h>
24 #include <ardour/automatable.h>
25 #include <ardour/midi_track.h>
28 using namespace ARDOUR;
32 AutomationControl::AutomationControl(Session& session, boost::shared_ptr<AutomationList> list, string name)
33 : Controllable((name == "unnamed controllable") ? list->parameter().to_string() : name)
36 , _user_value(list->default_value())
38 cerr << "Created AutomationControl " << name << "(" << list->parameter().to_string() << ")" << endl;
42 /** Get the currently effective value (ie the one that corresponds to current output)
45 AutomationControl::get_value() const
47 if (_list->automation_playback())
48 return _list->eval(_session.transport_frame());
55 AutomationControl::set_value(float value)
59 if (_session.transport_stopped() && _list->automation_write())
60 _list->add(_session.transport_frame(), value);
62 Changed(); /* EMIT SIGNAL */
66 /** Get the latest user-set value, which may not equal get_value() when automation
67 * is playing back, etc.
69 * Automation write/touch works by periodically sampling this value and adding it
70 * to the AutomationList.
73 AutomationControl::user_value() const
80 AutomationControl::set_list(boost::shared_ptr<ARDOUR::AutomationList> list)
83 _user_value = list->default_value();
84 Changed(); /* EMIT SIGNAL */
89 AutomationControl::parameter() const
91 return _list->parameter();