auto-backup: gtk2_ardour part. (from mixbus)
[ardour.git] / libs / ardour / automation_control.cc
index acd4c7a760c25512eef9091ef31de99814251d3c..5755e04aacc7e04210acebd7c52eb8ad6ee93b4f 100644 (file)
@@ -56,8 +56,9 @@ AutomationControl::AutomationControl(ARDOUR::Session&                          s
 
        : Controllable (name.empty() ? EventTypeMap::instance().to_symbol(parameter) : name, flags)
        , Evoral::Control(parameter, desc, list)
-       , _session(session)
+       , SessionHandleRef (session)
        , _desc(desc)
+       , _no_session(false)
 {
        if (_desc.toggled) {
                set_flags (Controllable::Toggle);
@@ -70,8 +71,18 @@ AutomationControl::AutomationControl(ARDOUR::Session&                          s
 
 AutomationControl::~AutomationControl ()
 {
-       _session.selection().remove_control_by_id (id());
+       if (!_no_session && !_session.deletion_in_progress ()) {
+               _session.selection().remove_control_by_id (id());
+               DropReferences (); /* EMIT SIGNAL */
+       }
+}
+
+void
+AutomationControl::session_going_away ()
+{
+       SessionHandleRef::session_going_away ();
        DropReferences (); /* EMIT SIGNAL */
+       _no_session = true;
 }
 
 bool
@@ -88,8 +99,8 @@ AutomationControl::writable() const
 double
 AutomationControl::get_value() const
 {
-       bool from_list = _list && boost::dynamic_pointer_cast<AutomationList>(_list)->automation_playback();
-       return Control::get_double (from_list, _session.transport_frame());
+       bool from_list = alist() && alist()->automation_playback();
+       return Control::get_double (from_list, _session.transport_sample());
 }
 
 double
@@ -146,6 +157,27 @@ AutomationControl::grouped_controls () const
        }
 }
 
+void
+AutomationControl::automation_run (samplepos_t start, pframes_t nframes)
+{
+       if (!automation_playback ()) {
+               return;
+       }
+
+       assert (_list);
+       bool valid = false;
+       double val = _list->rt_safe_eval (start, valid);
+       if (!valid) {
+               return;
+       }
+       if (toggled ()) {
+               const double thresh = .5 * (_desc.upper - _desc.lower);
+               set_value_unchecked (val >= thresh ? _desc.upper : _desc.lower);
+       } else {
+               set_value_unchecked (val);
+       }
+}
+
 /** Set the value and do the right thing based on automation state
  *  (e.g. record if necessary, etc.)
  *  @param value `user' value
@@ -153,10 +185,9 @@ AutomationControl::grouped_controls () const
 void
 AutomationControl::actually_set_value (double value, PBD::Controllable::GroupControlDisposition gcd)
 {
-       boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (_list);
-       const framepos_t pos = _session.transport_frame();
+       boost::shared_ptr<AutomationList> al = alist ();
+       const samplepos_t pos = _session.transport_sample();
        bool to_list;
-       double old_value;
 
        /* We cannot use ::get_value() here since that is virtual, and intended
           to return a scalar value that in some way reflects the state of the
@@ -173,36 +204,28 @@ AutomationControl::actually_set_value (double value, PBD::Controllable::GroupCon
           anything has changed) is the one derived from the automation event
           list.
        */
+       float old_value = Control::user_double();
 
-       if (!al) {
-               to_list = false;
-               old_value = Control::user_double();
+       if (al && al->automation_write ()) {
+               to_list = true;
        } else {
-               if (al->automation_write ()) {
-                       to_list = true;
-                       old_value = Control::user_double ();
-               } else if (al->automation_playback()) {
-                       to_list = false;
-                       old_value = al->eval (pos);
-               } else {
-                       to_list = false;
-                       old_value = Control::user_double ();
-               }
+               to_list = false;
        }
 
        Control::set_double (value, pos, to_list);
 
-       if (old_value != value) {
-               //AutomationType at = (AutomationType) _parameter.type();
-               //std::cerr << "++++ Changed (" << enum_2_string (at) << ", " << enum_2_string (gcd) << ") = " << value
-               //<< " (was " << old_value << ") @ " << this << std::endl;
+       if (old_value != (float)value) {
+#if 0
+               AutomationType at = (AutomationType) _parameter.type();
+               std::cerr << "++++ Changed (" << enum_2_string (at) << ", " << enum_2_string (gcd) << ") = " << value
+               << " (was " << old_value << ") @ " << this << std::endl;
+#endif
 
                Changed (true, gcd);
                if (!al || !al->automation_playback ()) {
                        _session.set_dirty ();
                }
        }
-
 }
 
 void
@@ -218,7 +241,7 @@ AutomationControl::set_automation_state (AutoState as)
        if (flags() & NotAutomatable) {
                return;
        }
-       if (_list && as != alist()->automation_state()) {
+       if (alist() && as != alist()->automation_state()) {
 
                const double val = get_value ();
 
@@ -230,10 +253,10 @@ AutomationControl::set_automation_state (AutoState as)
 
                if (as == Write) {
                        AutomationWatch::instance().add_automation_watch (shared_from_this());
-               } else if (as == Touch) {
+               } else if (as & (Touch | Latch)) {
                        if (alist()->empty()) {
-                               Control::set_double (val, _session.current_start_frame (), true);
-                               Control::set_double (val, _session.current_end_frame (), true);
+                               Control::set_double (val, _session.current_start_sample (), true);
+                               Control::set_double (val, _session.current_end_sample (), true);
                                Changed (true, Controllable::NoGroup);
                        }
                        if (!touching()) {
@@ -248,48 +271,51 @@ AutomationControl::set_automation_state (AutoState as)
                        }
                } else {
                        AutomationWatch::instance().remove_automation_watch (shared_from_this());
+                       Changed (false, Controllable::NoGroup);
                }
        }
 }
 
 void
-AutomationControl::start_touch(double when)
+AutomationControl::start_touch (double when)
 {
-       if (!_list) {
+       if (!_list || touching ()) {
                return;
        }
 
-       if (!touching()) {
-               if (alist()->automation_state() == Touch) {
-                       /* subtle. aligns the user value with the playback and
-                        * use take actual value (incl masters).
-                        *
-                        * Touch + hold writes inverse curve of master-automation
-                        * using AutomationWatch::timer ()
-                        */
-                       AutomationControl::actually_set_value (get_value (), Controllable::NoGroup);
-                       alist()->start_touch (when);
-                       if (!_desc.toggled) {
-                               AutomationWatch::instance().add_automation_watch (shared_from_this());
-                       }
+       if (alist()->automation_state() & (Touch | Latch)) {
+               /* subtle. aligns the user value with the playback and
+                * use take actual value (incl masters).
+                *
+                * Touch + hold writes inverse curve of master-automation
+                * using AutomationWatch::timer ()
+                */
+               AutomationControl::actually_set_value (get_value (), Controllable::NoGroup);
+               alist()->start_touch (when);
+               if (!_desc.toggled) {
+                       AutomationWatch::instance().add_automation_watch (shared_from_this());
                }
                set_touching (true);
        }
 }
 
 void
-AutomationControl::stop_touch(bool mark, double when)
+AutomationControl::stop_touch (double when)
 {
-       if (!_list) return;
-       if (touching()) {
-               set_touching (false);
+       if (!_list || !touching ()) {
+               return;
+       }
 
-               if (alist()->automation_state() == Touch) {
-                       alist()->stop_touch (mark, when);
-                       if (!_desc.toggled) {
-                               AutomationWatch::instance().remove_automation_watch (shared_from_this());
+       if (alist()->automation_state() == Latch && _session.transport_rolling ()) {
+               return;
+       }
 
-                       }
+       set_touching (false);
+
+       if (alist()->automation_state() & (Touch | Latch)) {
+               alist()->stop_touch (when);
+               if (!_desc.toggled) {
+                       AutomationWatch::instance().remove_automation_watch (shared_from_this());
                }
        }
 }
@@ -298,9 +324,10 @@ void
 AutomationControl::commit_transaction (bool did_write)
 {
        if (did_write) {
-               if (alist ()->before ()) {
+               XMLNode* before = alist ()->before ();
+               if (before) {
                        _session.begin_reversible_command (string_compose (_("record %1 automation"), name ()));
-                       _session.commit_reversible_command (new MementoCommand<AutomationList> (*alist ().get (), alist ()->before (), &alist ()->get_state ()));
+                       _session.commit_reversible_command (alist ()->memento_command (before, &alist ()->get_state ()));
                }
        } else {
                alist ()->clear_history ();