diff options
Diffstat (limited to 'libs/ardour/ardour/midi_state_tracker.h')
-rw-r--r-- | libs/ardour/ardour/midi_state_tracker.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libs/ardour/ardour/midi_state_tracker.h b/libs/ardour/ardour/midi_state_tracker.h new file mode 100644 index 0000000000..ff9fb71ccc --- /dev/null +++ b/libs/ardour/ardour/midi_state_tracker.h @@ -0,0 +1,51 @@ +/* + Copyright (C) 2008 Paul Davis + Author: Torben Hohn + + 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_midi_state_tracker_h__ +#define __ardour_midi_state_tracker_h__ + +#include <bitset> + +#include <ardour/midi_buffer.h> + + +namespace ARDOUR { + + +/** Tracks played notes, so they can be resolved in potential stuck note + * situations (e.g. looping, transport stop, etc). + */ +class MidiStateTracker +{ +public: + MidiStateTracker(); + + bool track (const MidiBuffer::iterator& from, const MidiBuffer::iterator& to); + void resolve_notes (MidiBuffer& buffer, nframes_t time); + +private: + void track_note_onoffs(Evoral::MIDIEvent& event); + + std::bitset<128*16> _active_notes; +}; + + +} // namespace ARDOUR + +#endif // __ardour_midi_state_tracker_h__ |