Add missing files.
git-svn-id: svn://localhost/ardour2/branches/3.0@3908 d708f5d6-7413-0410-9779-e7cbd77b26cf
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libs/ardour/ardour/midi_state_tracker.h
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libs/ardour/ardour/midi_state_tracker.h
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/*
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Copyright (C) 2008 Paul Davis
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Author: Torben Hohn
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_midi_state_tracker_h__
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#define __ardour_midi_state_tracker_h__
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#include <bitset>
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#include <ardour/midi_buffer.h>
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namespace ARDOUR {
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/** Tracks played notes, so they can be resolved in potential stuck note
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* situations (e.g. looping, transport stop, etc).
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*/
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class MidiStateTracker
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{
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public:
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MidiStateTracker();
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bool track (const MidiBuffer::iterator& from, const MidiBuffer::iterator& to);
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void resolve_notes (MidiBuffer& buffer, nframes_t time);
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private:
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void track_note_onoffs(Evoral::MIDIEvent& event);
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std::bitset<128*16> _active_notes;
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};
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} // namespace ARDOUR
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#endif // __ardour_midi_state_tracker_h__
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libs/ardour/midi_state_tracker.cc
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libs/ardour/midi_state_tracker.cc
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/*
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Copyright (C) 2006-2008 Paul Davis
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Author: Torben Hohn
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iostream>
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#include <ardour/event_type_map.h>
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#include <ardour/midi_state_tracker.h>
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using namespace std;
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using namespace ARDOUR;
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MidiStateTracker::MidiStateTracker ()
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{
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_active_notes.reset();
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}
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void
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MidiStateTracker::track_note_onoffs (Evoral::MIDIEvent &event)
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{
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if (event.is_note_on()) {
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_active_notes [event.note() + 128 * event.channel()] = true;
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} else if (event.is_note_off()){
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_active_notes [event.note() + 128 * event.channel()] = false;
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}
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}
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bool
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MidiStateTracker::track (const MidiBuffer::iterator &from, const MidiBuffer::iterator &to)
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{
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bool ret = false;
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for (MidiBuffer::iterator i = from; i != to; ++i) {
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if ((*i).event_type() == LoopEventType) {
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ret = true;
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continue;
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}
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track_note_onoffs (*i);
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}
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return ret;
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}
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void
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MidiStateTracker::resolve_notes (MidiBuffer &dst, nframes_t time)
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{
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// Dunno if this is actually faster but at least it fills our cacheline.
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if (_active_notes.none ())
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return;
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for (int channel = 0; channel < 16; ++channel) {
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for (int note = 0; note < 128; ++note) {
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if (_active_notes[channel * 128 + note]) {
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uint8_t buffer[3] = { MIDI_CMD_NOTE_OFF | channel, note, 0 };
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Evoral::MIDIEvent noteoff (time, MIDI_CMD_NOTE_OFF, 3, buffer, false);
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dst.push_back (noteoff);
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_active_notes [channel * 128 + note] = false;
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}
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}
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}
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}
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