fix crash when copy'ing latent plugins

[ardour.git] / libs / ardour / automation_list.cc

diff --git a/libs/ardour/automation_list.cc b/libs/ardour/automation_list.cc
index 91609f6acbe05aa2183255552657e4f3c561b1ce..4b23378cacd1275e0d170fb660682ac177bca556 100644 (file)
--- a/libs/ardour/automation_list.cc
+++ b/libs/ardour/automation_list.cc
@@ -27,10 +27,11 @@
 #include "ardour/event_type_map.h"
 #include "ardour/parameter_descriptor.h"
 #include "evoral/Curve.hpp"
+#include "pbd/memento_command.h"
 #include "pbd/stacktrace.h"
 #include "pbd/enumwriter.h"
 
-#include "i18n.h"
+#include "pbd/i18n.h"
 
 using namespace std;
 using namespace ARDOUR;
@@ -50,6 +51,7 @@ static void dumpit (const AutomationList& al, string prefix = "")
 #endif
 AutomationList::AutomationList (const Evoral::Parameter& id, const Evoral::ParameterDescriptor& desc)
        : ControlList(id, desc)
+       , _before (0)
 {
        _state = Off;
        _style = Absolute;
@@ -63,6 +65,7 @@ AutomationList::AutomationList (const Evoral::Parameter& id, const Evoral::Param
 
 AutomationList::AutomationList (const Evoral::Parameter& id)
        : ControlList(id, ARDOUR::ParameterDescriptor(id))
+       , _before (0)
 {
        _state = Off;
        _style = Absolute;
@@ -77,6 +80,7 @@ AutomationList::AutomationList (const Evoral::Parameter& id)
 AutomationList::AutomationList (const AutomationList& other)
        : StatefulDestructible()
        , ControlList(other)
+       , _before (0)
 {
        _style = other._style;
        _state = other._state;
@@ -90,6 +94,7 @@ AutomationList::AutomationList (const AutomationList& other)
 
 AutomationList::AutomationList (const AutomationList& other, double start, double end)
        : ControlList(other, start, end)
+       , _before (0)
 {
        _style = other._style;
        _state = other._state;
@@ -106,6 +111,7 @@ AutomationList::AutomationList (const AutomationList& other, double start, doubl
  */
 AutomationList::AutomationList (const XMLNode& node, Evoral::Parameter id)
        : ControlList(id, ARDOUR::ParameterDescriptor(id))
+       , _before (0)
 {
        g_atomic_int_set (&_touching, 0);
        _state = Off;
@@ -125,6 +131,7 @@ AutomationList::AutomationList (const XMLNode& node, Evoral::Parameter id)
 
 AutomationList::~AutomationList()
 {
+       delete _before;
 }
 
 boost::shared_ptr<Evoral::ControlList>
@@ -186,6 +193,12 @@ AutomationList::set_automation_state (AutoState s)
 {
        if (s != _state) {
                _state = s;
+               delete _before;
+               if (s == Write && _desc.toggled) {
+                       _before = &get_state ();
+               } else {
+                       _before = 0;
+               }
                automation_state_changed (s); /* EMIT SIGNAL */
        }
 }
@@ -199,6 +212,24 @@ AutomationList::set_automation_style (AutoStyle s)
        }
 }
 
+void
+AutomationList::start_write_pass (double when)
+{
+       delete _before;
+       if (in_new_write_pass ()) {
+               _before = &get_state ();
+       } else {
+               _before = 0;
+       }
+       ControlList::start_write_pass (when);
+}
+
+void
+AutomationList::write_pass_finished (double when, double thinning_factor)
+{
+       ControlList::write_pass_finished (when, thinning_factor);
+}
+
 void
 AutomationList::start_touch (double when)
 {
@@ -232,6 +263,18 @@ AutomationList::stop_touch (bool mark, double)
         }
 }
 
+/* _before may be owned by the undo stack,
+ * so we have to be careful about doing this.
+ *
+ * ::before () transfers ownership, setting _before to 0
+ */
+void
+AutomationList::clear_history ()
+{
+       delete _before;
+       _before = 0;
+}
+
 void
 AutomationList::thaw ()
 {
@@ -243,6 +286,12 @@ AutomationList::thaw ()
        }
 }
 
+Command*
+AutomationList::memento_command (XMLNode* before, XMLNode* after)
+{
+       return new MementoCommand<AutomationList> (*this, before, after);
+}
+
 XMLNode&
 AutomationList::get_state ()
 {
@@ -254,7 +303,7 @@ AutomationList::state (bool full)
 {
        XMLNode* root = new XMLNode (X_("AutomationList"));
        char buf[64];
-       LocaleGuard lg (X_("C"));
+       LocaleGuard lg;
 
        root->add_property ("automation-id", EventTypeMap::instance().to_symbol(_parameter));
 
@@ -372,11 +421,11 @@ AutomationList::deserialize_events (const XMLNode& node)
 int
 AutomationList::set_state (const XMLNode& node, int version)
 {
-       LocaleGuard lg (X_("C"));
+       LocaleGuard lg;
        XMLNodeList nlist = node.children();
        XMLNode* nsos;
        XMLNodeIterator niter;
-       const XMLProperty* prop;
+       XMLProperty const * prop;
 
        if (node.name() == X_("events")) {
                /* partial state setting*/
@@ -394,7 +443,7 @@ AutomationList::set_state (const XMLNode& node, int version)
 
                const XMLNodeList& elist = node.children();
                XMLNodeConstIterator i;
-               XMLProperty* prop;
+               XMLProperty const * prop;
                pframes_t x;
                double y;