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_ring_buffer.h"
23 #include "ardour/midi_source.h"
24 #include "ardour/midi_state_tracker.h"
27 using namespace ARDOUR
;
30 MidiStateTracker::MidiStateTracker ()
36 MidiStateTracker::reset ()
38 memset (_active_notes
, 0, sizeof (_active_notes
));
43 MidiStateTracker::track_note_onoffs (const Evoral::MIDIEvent
<MidiBuffer::TimeType
>& event
)
45 if (event
.is_note_on()) {
46 add (event
.note(), event
.channel());
47 } else if (event
.is_note_off()){
48 remove (event
.note(), event
.channel());
53 MidiStateTracker::add (uint8_t note
, uint8_t chn
)
55 ++_active_notes
[note
+ 128 * chn
];
60 MidiStateTracker::remove (uint8_t note
, uint8_t chn
)
62 switch (_active_notes
[note
+ 128 * chn
]) {
67 _active_notes
[note
+ 128 * chn
] = 0;
70 --_active_notes
[note
+ 128 * chn
];
77 MidiStateTracker::track (const MidiBuffer::iterator
&from
, const MidiBuffer::iterator
&to
, bool& looped
)
81 for (MidiBuffer::iterator i
= from
; i
!= to
; ++i
) {
82 const Evoral::MIDIEvent
<MidiBuffer::TimeType
> ev(*i
, false);
83 if (ev
.event_type() == LoopEventType
) {
88 track_note_onoffs (ev
);
93 MidiStateTracker::resolve_notes (MidiBuffer
&dst
, framepos_t time
)
99 for (int channel
= 0; channel
< 16; ++channel
) {
100 for (int note
= 0; note
< 128; ++note
) {
101 while (_active_notes
[note
+ 128 * channel
]) {
102 uint8_t buffer
[3] = { MIDI_CMD_NOTE_OFF
| channel
, note
, 0 };
103 Evoral::MIDIEvent
<MidiBuffer::TimeType
> noteoff
104 (MIDI_CMD_NOTE_OFF
, time
, 3, buffer
, false);
105 dst
.push_back (noteoff
);
106 _active_notes
[note
+ 128 * channel
]--;
114 MidiStateTracker::resolve_notes (Evoral::EventSink
<framepos_t
> &dst
, framepos_t time
)
122 for (int channel
= 0; channel
< 16; ++channel
) {
123 for (int note
= 0; note
< 128; ++note
) {
124 while (_active_notes
[note
+ 128 * channel
]) {
125 buf
[0] = MIDI_CMD_NOTE_OFF
|channel
;
128 dst
.write (time
, EventTypeMap::instance().midi_event_type (buf
[0]), 3, buf
);
129 _active_notes
[note
+ 128 * channel
]--;
137 MidiStateTracker::resolve_notes (MidiSource
& src
, Evoral::MusicalTime time
)
143 /* NOTE: the src must be locked */
145 for (int channel
= 0; channel
< 16; ++channel
) {
146 for (int note
= 0; note
< 128; ++note
) {
147 while (_active_notes
[note
+ 128 * channel
]) {
148 Evoral::MIDIEvent
<Evoral::MusicalTime
> ev ((MIDI_CMD_NOTE_OFF
|channel
), time
, 3, 0, true);
149 ev
.set_type (MIDI_CMD_NOTE_OFF
);
150 ev
.set_channel (channel
);
153 src
.append_event_unlocked_beats (ev
);
154 _active_notes
[note
+ 128 * channel
]--;
155 /* don't stack events up at the same time */
164 MidiStateTracker::dump (ostream
& o
)
167 for (int c
= 0; c
< 16; ++c
) {
168 for (int x
= 0; x
< 128; ++x
) {
169 if (_active_notes
[c
* 128 + x
]) {
170 o
<< "Channel " << c
+1 << " Note " << x
<< " is on ("
171 << (int) _active_notes
[c
*128+x
] << "times)\n";