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/*
Copyright (C) 2006-2008 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.
*/
#include <iostream>
#include "pbd/compose.h"
#include "pbd/stacktrace.h"
#include "evoral/EventSink.hpp"
#include "ardour/debug.h"
#include "ardour/midi_source.h"
#include "ardour/midi_state_tracker.h"
#include "ardour/parameter_types.h"
using namespace std;
using namespace ARDOUR;
MidiStateTracker::MidiStateTracker ()
{
reset ();
}
void
MidiStateTracker::reset ()
{
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1: reset\n", this));
memset (_active_notes, 0, sizeof (_active_notes));
_on = 0;
}
void
MidiStateTracker::add (uint8_t note, uint8_t chn)
{
if (_active_notes[note+128 * chn] == 0) {
++_on;
}
++_active_notes[note + 128 * chn];
if (_active_notes[note+128 * chn] > 1) {
//cerr << this << " note " << (int) note << '/' << (int) chn << " was already on, now at " << (int) _active_notes[note+128*chn] << endl;
}
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 ON %2/%3 voices %5 total on %4\n",
this, (int) note, (int) chn, _on,
(int) _active_notes[note+128 * chn]));
}
void
MidiStateTracker::remove (uint8_t note, uint8_t chn)
{
switch (_active_notes[note + 128 * chn]) {
case 0:
break;
case 1:
--_on;
_active_notes [note + 128 * chn] = 0;
break;
default:
--_active_notes [note + 128 * chn];
break;
}
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 OFF %2/%3 current voices = %5 total on %4\n",
this, (int) note, (int) chn, _on,
(int) _active_notes[note+128 * chn]));
}
void
MidiStateTracker::track (const MidiBuffer::const_iterator &from, const MidiBuffer::const_iterator &to)
{
for (MidiBuffer::const_iterator i = from; i != to; ++i) {
track(*i);
}
}
void
MidiStateTracker::track (const uint8_t* evbuf)
{
const uint8_t type = evbuf[0] & 0xF0;
const uint8_t chan = evbuf[0] & 0x0F;
switch (type) {
case MIDI_CTL_ALL_NOTES_OFF:
reset();
break;
case MIDI_CMD_NOTE_ON:
add(evbuf[1], chan);
break;
case MIDI_CMD_NOTE_OFF:
remove(evbuf[1], chan);
break;
}
}
void
MidiStateTracker::resolve_notes (MidiBuffer &dst, framepos_t time)
{
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 MB-resolve notes @ %2 on = %3\n", this, time, _on));
if (!_on) {
return;
}
for (int channel = 0; channel < 16; ++channel) {
for (int note = 0; note < 128; ++note) {
while (_active_notes[note + 128 * channel]) {
uint8_t buffer[3] = { ((uint8_t) (MIDI_CMD_NOTE_OFF | channel)), uint8_t (note), 0 };
Evoral::Event<MidiBuffer::TimeType> noteoff
(Evoral::MIDI_EVENT, time, 3, buffer, false);
/* note that we do not care about failure from
push_back() ... should we warn someone ?
*/
dst.push_back (noteoff);
_active_notes[note + 128 * channel]--;
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1: MB-resolved note %2/%3 at %4\n",
this, (int) note, (int) channel, time));
}
}
}
_on = 0;
}
void
MidiStateTracker::resolve_notes (Evoral::EventSink<framepos_t> &dst, framepos_t time)
{
uint8_t buf[3];
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 EVS-resolve notes @ %2 on = %3\n", this, time, _on));
if (!_on) {
return;
}
for (int channel = 0; channel < 16; ++channel) {
for (int note = 0; note < 128; ++note) {
while (_active_notes[note + 128 * channel]) {
buf[0] = MIDI_CMD_NOTE_OFF|channel;
buf[1] = note;
buf[2] = 0;
/* note that we do not care about failure from
write() ... should we warn someone ?
*/
dst.write (time, Evoral::MIDI_EVENT, 3, buf);
_active_notes[note + 128 * channel]--;
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1: EVS-resolved note %2/%3 at %4\n",
this, (int) note, (int) channel, time));
}
}
}
_on = 0;
}
void
MidiStateTracker::resolve_notes (MidiSource& src, const MidiSource::Lock& lock, Evoral::Beats time)
{
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 MS-resolve notes @ %2 on = %3\n", this, time, _on));
if (!_on) {
return;
}
/* NOTE: the src must be locked */
for (int channel = 0; channel < 16; ++channel) {
for (int note = 0; note < 128; ++note) {
while (_active_notes[note + 128 * channel]) {
Evoral::Event<Evoral::Beats> ev (Evoral::MIDI_EVENT, time, 3, 0, true);
ev.set_type (MIDI_CMD_NOTE_OFF);
ev.set_channel (channel);
ev.set_note (note);
ev.set_velocity (0);
src.append_event_beats (lock, ev);
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1: MS-resolved note %2/%3 at %4\n",
this, (int) note, (int) channel, time));
_active_notes[note + 128 * channel]--;
/* don't stack events up at the same time */
time += Evoral::Beats::tick();
}
}
}
_on = 0;
}
void
MidiStateTracker::dump (ostream& o)
{
o << "******\n";
for (int c = 0; c < 16; ++c) {
for (int x = 0; x < 128; ++x) {
if (_active_notes[c * 128 + x]) {
o << "Channel " << c+1 << " Note " << x << " is on ("
<< (int) _active_notes[c*128+x] << " times)\n";
}
}
}
o << "+++++\n";
}
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