2 Copyright (C) 2006-2008 Paul Davis
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the Free
7 Software Foundation; either version 2 of the License, or (at your option)
10 This program is distributed in the hope that it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <ardour/event_type_map.h>
22 #include <ardour/midi_state_tracker.h>
25 using namespace ARDOUR;
28 MidiStateTracker::MidiStateTracker ()
30 _active_notes.reset();
34 MidiStateTracker::track_note_onoffs (const Evoral::MIDIEvent<MidiBuffer::TimeType>& event)
36 if (event.is_note_on()) {
37 _active_notes [event.note() + 128 * event.channel()] = true;
38 } else if (event.is_note_off()){
39 _active_notes [event.note() + 128 * event.channel()] = false;
44 MidiStateTracker::track (const MidiBuffer::iterator &from, const MidiBuffer::iterator &to)
48 for (MidiBuffer::iterator i = from; i != to; ++i) {
49 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
50 if (ev.event_type() == LoopEventType) {
55 track_note_onoffs (ev);
61 MidiStateTracker::resolve_notes (MidiBuffer &dst, nframes_t time)
63 // Dunno if this is actually faster but at least it fills our cacheline.
64 if (_active_notes.none ())
67 for (int channel = 0; channel < 16; ++channel) {
68 for (int note = 0; note < 128; ++note) {
69 if (_active_notes[channel * 128 + note]) {
70 uint8_t buffer[3] = { MIDI_CMD_NOTE_OFF | channel, note, 0 };
71 Evoral::MIDIEvent<MidiBuffer::TimeType> noteoff
72 (time, MIDI_CMD_NOTE_OFF, 3, buffer, false);
74 dst.push_back (noteoff);
76 _active_notes [channel * 128 + note] = false;