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/*
Copyright (C) 2007 Paul Davis
Author: Dave Robillard
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.
*/
#include <iostream>
#include <ardour/automation_control.h>
#include <ardour/session.h>
#include <ardour/automatable.h>
using namespace std;
using namespace ARDOUR;
using namespace PBD;
AutomationControl::AutomationControl(Session& session, boost::shared_ptr<AutomationList> list, string name)
: Controllable((name == "unnamed controllable") ? list->param_id().to_string() : name)
, _session(session)
, _list(list)
, _user_value(list->default_value())
{
cerr << "Created AutomationControl " << name << "(" << list->param_id().to_string() << ")" << endl;
}
/** Get the currently effective value (ie the one that corresponds to current output)
*/
float
AutomationControl::get_value() const
{
if (_list->automation_playback())
return _list->eval(_session.transport_frame());
else
return _user_value;
}
void
AutomationControl::set_value(float value)
{
_user_value = value;
if (_session.transport_stopped() && _list->automation_write())
_list->add(_session.transport_frame(), value);
Changed(); /* EMIT SIGNAL */
}
/** Get the latest user-set value, which may not equal get_value() when automation
* is playing back, etc.
*
* Automation write/touch works by periodically sampling this value and adding it
* to the AutomationList.
*/
float
AutomationControl::user_value() const
{
return _user_value;
}
void
AutomationControl::set_list(boost::shared_ptr<ARDOUR::AutomationList> list)
{
_list = list;
_user_value = list->default_value();
Changed(); /* EMIT SIGNAL */
}
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