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

[ardour.git] / libs / ardour / ardour / midi_scene_changer.h

diff --git a/libs/ardour/ardour/midi_scene_changer.h b/libs/ardour/ardour/midi_scene_changer.h
new file mode 100644 (file)
index 0000000..2cc0464
--- /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__ */