2 Copyright (C) 2007 Paul Davis
3 Author: David Robillard
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.
21 #ifndef __ardour_automation_control_h__
22 #define __ardour_automation_control_h__
26 #include <glibmm/threads.h>
28 #include <boost/shared_ptr.hpp>
29 #include <boost/enable_shared_from_this.hpp>
31 #include "pbd/controllable.h"
33 #include "evoral/types.hpp"
34 #include "evoral/Control.hpp"
36 #include "ardour/automation_list.h"
37 #include "ardour/control_group_member.h"
38 #include "ardour/parameter_descriptor.h"
40 #include "ardour/libardour_visibility.h"
48 /** A PBD::Controllable with associated automation data (AutomationList)
50 class LIBARDOUR_API AutomationControl
51 : public PBD::Controllable
52 , public Evoral::Control
53 , public boost::enable_shared_from_this<AutomationControl>
54 , public ControlGroupMember
57 AutomationControl(ARDOUR::Session&,
58 const Evoral::Parameter& parameter,
59 const ParameterDescriptor& desc,
60 boost::shared_ptr<ARDOUR::AutomationList> l=boost::shared_ptr<ARDOUR::AutomationList>(),
61 const std::string& name="",
62 PBD::Controllable::Flag flags=PBD::Controllable::Flag (0)
65 virtual ~AutomationControl ();
67 boost::shared_ptr<AutomationList> alist() const {
68 return boost::dynamic_pointer_cast<AutomationList>(_list);
71 void set_list (boost::shared_ptr<Evoral::ControlList>);
73 inline bool automation_playback() const {
74 return alist() ? alist()->automation_playback() : false;
77 inline bool automation_write() const {
78 return alist() ? alist()->automation_write() : false;
81 inline AutoState automation_state() const {
82 return alist() ? alist()->automation_state() : Off;
85 inline AutoStyle automation_style() const {
86 return alist() ? alist()->automation_style() : Absolute;
89 void set_automation_state(AutoState as);
90 void set_automation_style(AutoStyle as);
91 void start_touch(double when);
92 void stop_touch(bool mark, double when);
94 /* inherited from PBD::Controllable. */
95 virtual double get_value () const;
96 virtual double get_save_value () const;
98 /* inherited from PBD::Controllable.
99 * Derived classes MUST call ::writable() to verify
100 * that writing to the parameter is legal at that time.
102 void set_value (double value, PBD::Controllable::GroupControlDisposition group_override);
103 /* automation related value setting */
104 virtual bool writable () const;
105 /* Call to ::set_value() with no test for writable() because
106 * this is only used by automation playback.
108 void set_value_unchecked (double val) {
109 actually_set_value (val, PBD::Controllable::NoGroup);
112 double lower() const { return _desc.lower; }
113 double upper() const { return _desc.upper; }
114 double normal() const { return _desc.normal; }
115 bool toggled() const { return _desc.toggled; }
117 double internal_to_interface (double i) const;
118 double interface_to_internal (double i) const;
120 virtual std::string get_user_string() const;
122 const ParameterDescriptor& desc() const { return _desc; }
124 const ARDOUR::Session& session() const { return _session; }
125 void commit_transaction (bool did_write);
128 ARDOUR::Session& _session;
129 boost::shared_ptr<ControlGroup> _group;
131 const ParameterDescriptor _desc;
133 bool check_rt (double val, Controllable::GroupControlDisposition gcd);
135 /* derived classes may reimplement this, but should either
136 call this explicitly inside their version OR make sure that the
137 Controllable::Changed signal is emitted when necessary.
140 virtual void actually_set_value (double value, PBD::Controllable::GroupControlDisposition);
142 /* Session needs to call this method before it queues up the real
143 change for execution in a realtime context. C++ access control sucks.
145 friend class Session;
146 /* this is what the session invokes */
147 void pre_realtime_queue_stuff (double new_value, PBD::Controllable::GroupControlDisposition);
148 /* this will be invoked in turn on behalf of the group or the control by itself */
149 virtual void do_pre_realtime_queue_stuff (double new_value) {}
152 /* I am unclear on why we have to make ControlGroup a friend in order
153 to get access to the ::set_group() method when it is already
154 declared to be a friend in ControlGroupMember. Oh well.
156 friend class ControlGroup;
157 void set_group (boost::shared_ptr<ControlGroup>);
158 PBD::ScopedConnection _state_changed_connection;
162 } // namespace ARDOUR
164 #endif /* __ardour_automation_control_h__ */