merge (squash) with scenechange topic branch to provide MIDI-driven scene change markers

1 files changed, 72 insertions, 0 deletions

diff --git a/libs/ardour/ardour/midi_scene_changer.h b/libs/ardour/ardour/midi_scene_changer.h
new file mode 100644
index 0000000000..2cc0464bec
--- /dev/null
+++ b/libs/ardour/ardour/midi_scene_changer.h
@@ -0,0 +1,72 @@
+/*
+    Copyright (C) 2014 Paul Davis
+
+    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 __libardour_midi_scene_changer_h__
+#define __libardour_midi_scene_changer_h__
+
+#include "ardour/scene_changer.h"
+
+namespace ARDOUR
+{
+
+class MIDISceneChanger : public SceneChanger
+{
+    public:
+	MIDISceneChanger (Session&);
+	~MIDISceneChanger ();
+
+	void run (framepos_t start, framepos_t end);
+	void set_input_port (MIDI::Port*);
+	void set_output_port (boost::shared_ptr<MidiPort>);
+
+	uint8_t bank_at (framepos_t, uint8_t channel);
+	uint8_t program_at (framepos_t, uint8_t channel);
+
+	void set_recording (bool);
+	void locate (framepos_t);
+
+    private:
+	typedef std::multimap<framepos_t,boost::shared_ptr<MIDISceneChange> > Scenes;
+
+	MIDI::Port* input_port;
+	boost::shared_ptr<MidiPort> output_port;
+	Scenes scenes;
+	bool _recording;
+	framepos_t last_bank_message_time;
+	framepos_t last_program_message_time;
+	unsigned short current_bank;
+	int last_delivered_program;
+	int last_delivered_bank;
+
+	void gather ();
+	bool recording () const;
+	void jump_to (int bank, int program);
+	void deliver (MidiBuffer&, framepos_t, boost::shared_ptr<MIDISceneChange>);
+
+	void bank_change_input (MIDI::Parser&, unsigned short);
+	void program_change_input (MIDI::Parser&, MIDI::byte);
+	void locations_changed (Locations::Change);
+
+	PBD::ScopedConnection incoming_bank_change_connection;
+	PBD::ScopedConnection incoming_program_change_connection;
+};
+
+} // namespace
+
+#endif /* __libardour_midi_scene_changer_h__ */