MIDI region forking, plus Playlist::regions_to_read() fix forward ported from 2.X. region forking requires a few cleanups

git-svn-id: svn://localhost/ardour2/branches/3.0@7118 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 12 insertions, 0 deletions

diff --git a/libs/ardour/automatable.cc b/libs/ardour/automatable.cc
index 1ef39a61f0..3d705b3ea7 100644
--- a/libs/ardour/automatable.cc
+++ b/libs/ardour/automatable.cc
@@ -49,6 +49,18 @@ Automatable::Automatable(Session& session)
 {
 }
 
+Automatable::Automatable (const Automatable& other)
+        : ControlSet (other)
+        , _a_session (other._a_session)
+        , _last_automation_snapshot (0)
+{
+        Glib::Mutex::Lock lm (other._control_lock);
+
+        for (Controls::const_iterator i = other._controls.begin(); i != other._controls.end(); ++i) {
+                boost::shared_ptr<Evoral::Control> ac (control_factory (i->first));
+                _controls[ac->parameter()] = ac;
+        }
+}
 int
 Automatable::old_set_automation_state (const XMLNode& node)
 {