libs/ardour/automation_control.cc

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: Dave Robillard
   4
   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.
   9
  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.
  14
  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.
  18
  19 */
  20
  21 #include <iostream>
  22 #include "ardour/automatable.h"
  23 #include "ardour/automation_control.h"
  24 #include "ardour/event_type_map.h"
  25 #include "ardour/session.h"
  26
  27 using namespace std;
  28 using namespace ARDOUR;
  29 using namespace PBD;
  30
  31
  32 AutomationControl::AutomationControl(
  33                 ARDOUR::Session& session,
  34                 const Evoral::Parameter& parameter,
  35                 boost::shared_ptr<ARDOUR::AutomationList> list,
  36                 const string& name)
  37         : Controllable((name != "") ? name : EventTypeMap::instance().to_symbol(parameter))
  38         , Evoral::Control(parameter, list)
  39         , _session(session)
  40 {
  41 }
  42
  43
  44 float
  45 AutomationControl::get_value() const
  46 {
  47         bool from_list = _list && ((AutomationList*)_list.get())->automation_playback();
  48         return Control::get_float(from_list, _session.transport_frame());
  49 }
  50
  51
  52 void
  53 AutomationControl::set_value(float value)
  54 {
  55         bool to_list = _list && _session.transport_stopped()
  56                 && ((AutomationList*)_list.get())->automation_write();
  57
  58         Control::set_float(value, to_list, _session.transport_frame());
  59
  60         Changed(); /* EMIT SIGNAL */
  61 }
  62
  63
  64 void
  65 AutomationControl::set_list(boost::shared_ptr<Evoral::ControlList> list)
  66 {
  67         Control::set_list(list);
  68         Changed();  /* EMIT SIGNAL */
  69 }
  70