fix crash when copy'ing latent plugins
[ardour.git] / libs / ardour / automation_control.cc
index 2586a14b5841810d0891a1cbfd8a49167a7cf954..e27da6ab08797f30badbec995de59bb33a57b136 100644 (file)
 
 */
 
+#include <math.h>
 #include <iostream>
 
+#include "pbd/memento_command.h"
+#include "pbd/stacktrace.h"
+
+#include "ardour/audioengine.h"
 #include "ardour/automation_control.h"
 #include "ardour/automation_watch.h"
+#include "ardour/control_group.h"
 #include "ardour/event_type_map.h"
 #include "ardour/session.h"
 
+#include "pbd/i18n.h"
+
+#ifdef COMPILER_MSVC
+#include <float.h>
+// C99 'isfinite()' is not available in MSVC.
+#define isfinite_local(val) (bool)_finite((double)val)
+#else
+#define isfinite_local isfinite
+#endif
+
 using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 
-AutomationControl::AutomationControl(
-               ARDOUR::Session& session,
-               const Evoral::Parameter& parameter,
-               boost::shared_ptr<ARDOUR::AutomationList> list,
-               const string& name)
+AutomationControl::AutomationControl(ARDOUR::Session&                          session,
+                                     const Evoral::Parameter&                  parameter,
+                                     const ParameterDescriptor&                desc,
+                                     boost::shared_ptr<ARDOUR::AutomationList> list,
+                                     const string&                             name)
        : Controllable (name.empty() ? EventTypeMap::instance().to_symbol(parameter) : name)
-       , Evoral::Control(parameter, list)
+       , Evoral::Control(parameter, desc, list)
        , _session(session)
+       , _desc(desc)
 {
+       if (_desc.toggled) {
+               set_flags (Controllable::Toggle);
+       }
 }
 
 AutomationControl::~AutomationControl ()
 {
+       DropReferences (); /* EMIT SIGNAL */
+}
+
+bool
+AutomationControl::writable() const
+{
+       boost::shared_ptr<AutomationList> al = alist();
+       if (al) {
+               return al->automation_state() != Play;
+       }
+       return true;
 }
 
 /** Get the current effective `user' value based on automation state */
 double
 AutomationControl::get_value() const
 {
-       bool from_list = _list && ((AutomationList*)_list.get())->automation_playback();
+       bool from_list = _list && boost::dynamic_pointer_cast<AutomationList>(_list)->automation_playback();
        return Control::get_double (from_list, _session.transport_frame());
 }
 
-/** Set the value and do the right thing based on automation state
- *  (e.g. record if necessary, etc.)
- *  @param value `user' value
- */
 void
-AutomationControl::set_value (double value)
+AutomationControl::set_value (double val, PBD::Controllable::GroupControlDisposition gcd)
 {
-       bool to_list = _list && ((AutomationList*)_list.get())->automation_write();
+       if (!writable()) {
+               return;
+       }
 
-        if (to_list && parameter().toggled()) {
+       /* enforce strict double/boolean value mapping */
 
-                // store the previous value just before this so any
-                // interpolation works right
+       if (_desc.toggled) {
+               if (val != 0.0) {
+                       val = 1.0;
+               }
+       }
 
+       if (check_rt (val, gcd)) {
+               /* change has been queued to take place in an RT context */
+               return;
+       }
 
-                _list->add (get_double(), _session.transport_frame()-1);
-        }
+       if (_group && _group->use_me (gcd)) {
+               _group->set_group_value (shared_from_this(), val);
+       } else {
+               actually_set_value (val, gcd);
+       }
+}
+
+/** Set the value and do the right thing based on automation state
+ *  (e.g. record if necessary, etc.)
+ *  @param value `user' value
+ */
+void
+AutomationControl::actually_set_value (double value, PBD::Controllable::GroupControlDisposition gcd)
+{
+       bool to_list = _list && boost::dynamic_pointer_cast<AutomationList>(_list)->automation_write();
+       //const double old_value = Control::user_double ();
 
        Control::set_double (value, _session.transport_frame(), to_list);
 
-       Changed(); /* EMIT SIGNAL */
+       //AutomationType at = (AutomationType) _parameter.type();
+       //std::cerr << "++++ Changed (" << enum_2_string (at) << ", " << enum_2_string (gcd) << ") = " << value 
+       //<< " (was " << old_value << ") @ " << this << std::endl;
+
+       Changed (true, gcd);
 }
 
 void
 AutomationControl::set_list (boost::shared_ptr<Evoral::ControlList> list)
 {
        Control::set_list (list);
-       Changed();  /* EMIT SIGNAL */
+       Changed (true, Controllable::NoGroup);
 }
 
 void
 AutomationControl::set_automation_state (AutoState as)
 {
-       if (as != alist()->automation_state()) {
+       if (flags() & NotAutomatable) {
+               return;
+       }
+       if (_list && as != alist()->automation_state()) {
+
+               const double val = get_value ();
 
                alist()->set_automation_state (as);
+               if (_desc.toggled) {
+                       return;  // No watch for boolean automation
+               }
 
                if (as == Write) {
                        AutomationWatch::instance().add_automation_watch (shared_from_this());
                } else if (as == Touch) {
+                       if (alist()->empty()) {
+                               Control::set_double (val, _session.current_start_frame (), true);
+                               Control::set_double (val, _session.current_end_frame (), true);
+                               Changed (true, Controllable::NoGroup);
+                       }
                        if (!touching()) {
                                AutomationWatch::instance().remove_automation_watch (shared_from_this());
                        } else {
@@ -111,21 +178,128 @@ AutomationControl::set_automation_state (AutoState as)
 void
 AutomationControl::set_automation_style (AutoStyle as)
 {
+       if (!_list) return;
        alist()->set_automation_style (as);
 }
 
 void
 AutomationControl::start_touch(double when)
 {
-       set_touching (true);
-       alist()->start_touch(when);
-       AutomationWatch::instance().add_automation_watch (shared_from_this());
+       if (!_list) {
+               return;
+       }
+
+       if (!touching()) {
+
+               if (alist()->automation_state() == Touch) {
+                       /* subtle. aligns the user value with the playback */
+                       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)
 {
-       set_touching (false);
-       alist()->stop_touch (mark, when);
-       AutomationWatch::instance().remove_automation_watch (shared_from_this());
+       if (!_list) return;
+       if (touching()) {
+               set_touching (false);
+
+               if (alist()->automation_state() == Touch) {
+                       alist()->stop_touch (mark, when);
+                       if (!_desc.toggled) {
+                               AutomationWatch::instance().remove_automation_watch (shared_from_this());
+
+                       }
+               }
+       }
+}
+
+void
+AutomationControl::commit_transaction (bool did_write)
+{
+       if (did_write) {
+               if (alist ()->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 ()));
+               }
+       } else {
+               alist ()->clear_history ();
+       }
+}
+
+double
+AutomationControl::internal_to_interface (double val) const
+{
+       if (_desc.integer_step) {
+               // both upper and lower are inclusive.
+               val =  (val - lower()) / (1 + upper() - lower());
+       } else {
+               val =  (val - lower()) / (upper() - lower());
+       }
+
+       if (_desc.logarithmic) {
+               if (val > 0) {
+                       val = pow (val, 1./2.0);
+               } else {
+                       val = 0;
+               }
+       }
+
+       return val;
+}
+
+double
+AutomationControl::interface_to_internal (double val) const
+{
+       if (!isfinite_local (val)) {
+               val = 0;
+       }
+       if (_desc.logarithmic) {
+               if (val <= 0) {
+                       val = 0;
+               } else {
+                       val = pow (val, 2.0);
+               }
+       }
+
+       if (_desc.integer_step) {
+               val =  lower() + val * (1 + upper() - lower());
+       } else {
+               val =  lower() + val * (upper() - lower());
+       }
+
+       if (val < lower()) val = lower();
+       if (val > upper()) val = upper();
+
+       return val;
+}
+
+void
+AutomationControl::set_group (boost::shared_ptr<ControlGroup> cg)
+{
+       /* this method can only be called by a ControlGroup. We do not need
+          to ensure consistency by calling ControlGroup::remove_control(),
+          since we are guaranteed that the ControlGroup will take care of that
+          for us.
+       */
+
+       _group = cg;
+}
+
+bool
+AutomationControl::check_rt (double val, Controllable::GroupControlDisposition gcd)
+{
+       if (!_session.loading() && (flags() & Controllable::RealTime) && !AudioEngine::instance()->in_process_thread()) {
+               /* queue change in RT context */
+               _session.set_control (shared_from_this(), val, gcd);
+               return true;
+       }
+
+       return false;
 }