Add legatize and remove overlap MIDI operations.

We're going to need the ability to apply MIDI edit operations to a note/control
selection soon...

3 files changed, 117 insertions, 0 deletions

diff --git a/libs/ardour/ardour/legatize.h b/libs/ardour/ardour/legatize.h
new file mode 100644
index 0000000000..4a170e1a1c
--- /dev/null
+++ b/libs/ardour/ardour/legatize.h
@@ -0,0 +1,56 @@
+/*
+    Copyright (C) 2014 Paul Davis
+    Author: David Robillard
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __ardour_legatize_h__
+#define __ardour_legatize_h__
+
+#include <string>
+
+#include "ardour/libardour_visibility.h"
+#include "ardour/types.h"
+#include "ardour/midi_operator.h"
+
+namespace ARDOUR {
+
+/** "Legatize" nodes (extend note ends to force legato).
+ *
+ * This can also do "remove overlap" by setting shrink_only to true, in which
+ * case note lengths will only be changed if they are long enough to overlap
+ * the following note.
+ */
+class LIBARDOUR_API Legatize : public MidiOperator {
+public:
+	Legatize(bool shrink_only);
+	~Legatize();
+
+	typedef Evoral::Sequence<Evoral::MusicalTime>::Notes Notes;
+
+	Command* operator()(boost::shared_ptr<ARDOUR::MidiModel> model,
+	                    Evoral::MusicalTime                  position,
+	                    std::vector<Notes>&                  seqs);
+
+	std::string name() const { return std::string ("legatize"); }
+
+private:
+	bool _shrink_only;
+};
+
+} /* namespace */
+
+#endif /* __ardour_legatize_h__ */
diff --git a/libs/ardour/legatize.cc b/libs/ardour/legatize.cc
new file mode 100644
index 0000000000..d1892e0bbb
--- /dev/null
+++ b/libs/ardour/legatize.cc
@@ -0,0 +1,60 @@
+/*
+    Copyright (C) 20014 Paul Davis
+    Author: David Robillard
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "ardour/legatize.h"
+#include "ardour/midi_model.h"
+
+namespace ARDOUR {
+
+Legatize::Legatize(bool shrink_only)
+	: _shrink_only(shrink_only)
+{}
+
+Legatize::~Legatize ()
+{}
+
+Command*
+Legatize::operator()(boost::shared_ptr<ARDOUR::MidiModel> model,
+                     Evoral::MusicalTime                  position,
+                     std::vector<Legatize::Notes>&        seqs)
+{
+	MidiModel::NoteDiffCommand* cmd = new MidiModel::NoteDiffCommand(model, "legatize");
+
+	for (std::vector<Legatize::Notes>::iterator s = seqs.begin(); s != seqs.end(); ++s) {
+		for (Legatize::Notes::iterator i = (*s).begin(); i != (*s).end();) {
+			Legatize::Notes::iterator next = i;
+			if (++next == (*s).end()) {
+				break;
+			}
+
+			const Evoral::MusicalTime new_end = (*next)->time() - Evoral::MusicalTime::tick();
+			if ((*i)->end_time() > new_end ||
+			    (!_shrink_only && (*i)->end_time() < new_end)) {
+				const Evoral::MusicalTime new_length(new_end - (*i)->time());
+				cmd->change((*i), MidiModel::NoteDiffCommand::Length, new_length);
+			}
+
+			i = next;
+		}
+	}
+
+	return cmd;
+}
+
+}  // namespace ARDOUR
diff --git a/libs/ardour/wscript b/libs/ardour/wscript
index f8ec4ff507..d19f66c0f6 100644
--- a/libs/ardour/wscript
+++ b/libs/ardour/wscript
@@ -105,6 +105,7 @@ libardour_sources = [
         'io_processor.cc',
         'kmeterdsp.cc',
         'ladspa_plugin.cc',
+        'legatize.cc',
         'location.cc',
         'location_importer.cc',
         'ltc_slave.cc',