Enums are not Classes in C++98
[ardour.git] / libs / ardour / automation_control.cc
index 1f507b701513b7d58b3e8c8dedad3c88f51864b3..ffff120a239a7e9602833993c05ff211107374fe 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 "ardour/selection.h"
 
-#include "pbd/memento_command.h"
-#include "pbd/stacktrace.h"
+#include "pbd/i18n.h"
 
-#include "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;
@@ -37,16 +50,27 @@ AutomationControl::AutomationControl(ARDOUR::Session&                          s
                                      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)
+                                     const string&                             name,
+                                     Controllable::Flag                        flags)
+
+       : Controllable (name.empty() ? EventTypeMap::instance().to_symbol(parameter) : name, flags)
        , Evoral::Control(parameter, desc, list)
        , _session(session)
        , _desc(desc)
 {
+       if (_desc.toggled) {
+               set_flags (Controllable::Toggle);
+       }
+       boost::shared_ptr<AutomationList> al = alist();
+       if (al) {
+               al->StateChanged.connect_same_thread (_state_changed_connection, boost::bind (&Session::set_dirty, &_session));
+       }
 }
 
 AutomationControl::~AutomationControl ()
 {
+       _session.selection().remove_control_by_id (id());
+       DropReferences (); /* EMIT SIGNAL */
 }
 
 bool
@@ -63,36 +87,123 @@ AutomationControl::writable() const
 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());
 }
 
+void
+AutomationControl::pre_realtime_queue_stuff (double val, PBD::Controllable::GroupControlDisposition gcd)
+{
+       if (_group && _group->use_me (gcd)) {
+               _group->pre_realtime_queue_stuff (val);
+       } else {
+               do_pre_realtime_queue_stuff (val);
+       }
+}
+
+void
+AutomationControl::set_value (double val, PBD::Controllable::GroupControlDisposition gcd)
+{
+       if (!writable()) {
+               return;
+       }
+
+       /* enforce strict double/boolean value mapping */
+
+       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;
+       }
+
+       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::set_value (double value)
+AutomationControl::actually_set_value (double value, PBD::Controllable::GroupControlDisposition gcd)
 {
-       bool to_list = _list && ((AutomationList*)_list.get())->automation_write();
+       boost::shared_ptr<AutomationList> al = boost::dynamic_pointer_cast<AutomationList> (_list);
+       const framepos_t pos = _session.transport_frame();
+       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
+          control (with semantics defined by the control itself, since it's
+          internal state may be more complex than can be fully represented by
+          a single scalar).
+
+          This method's only job is to set the "user_double()" value of the
+          underlying Evoral::Control object, and so we should compare the new
+          value we're being given to the current user_double().
+
+          Unless ... we're doing automation playback, in which case the
+          current effective value of the control (used to determine if
+          anything has changed) is the one derived from the automation event
+          list.
+       */
+
+       if (!al) {
+               to_list = false;
+               old_value = Control::user_double();
+       } 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 ();
+               }
+       }
 
-       Control::set_double (value, _session.transport_frame(), to_list);
+       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;
+
+               Changed (true, gcd);
+               if (!al || !al->automation_playback ()) {
+                       _session.set_dirty ();
+               }
+       }
 
-       Changed(); /* EMIT SIGNAL */
 }
 
 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 (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
@@ -101,6 +212,11 @@ AutomationControl::set_automation_state (AutoState as)
                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 {
@@ -135,7 +251,7 @@ AutomationControl::start_touch(double when)
 
                if (alist()->automation_state() == Touch) {
                        /* subtle. aligns the user value with the playback */
-                       set_value (get_value ());
+                       set_value (get_value (), Controllable::NoGroup);
                        alist()->start_touch (when);
                        if (!_desc.toggled) {
                                AutomationWatch::instance().add_automation_watch (shared_from_this());
@@ -199,6 +315,9 @@ AutomationControl::internal_to_interface (double val) const
 double
 AutomationControl::interface_to_internal (double val) const
 {
+       if (!isfinite_local (val)) {
+               val = 0;
+       }
        if (_desc.logarithmic) {
                if (val <= 0) {
                        val = 0;
@@ -219,4 +338,26 @@ AutomationControl::interface_to_internal (double val) const
        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;
+}