ardour/livetrax
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add MidiNoteTracker::flush_notes() that writes note-on events corresponding to currently-on notes

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This does not maintain note timing, but once the buffer contents arrive at a receiver, it should
be playing all the notes that were marked on in the tracker
This commit is contained in:
Paul Davis 2022-02-01 17:54:40 -07:00
parent 885d2feb6a
commit 8449d344ae
1 changed files with 27 additions and 0 deletions
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27
libs/ardour/midi_state_tracker.cc
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@ -198,6 +198,33 @@ MidiNoteTracker::resolve_notes (MidiSource& src, const MidiSource::Lock& lock, T
_on = 0;
}
void
MidiNoteTracker::flush_notes (MidiBuffer &dst, samplepos_t time)
{
DEBUG_TRACE (PBD::DEBUG::MidiTrackers, string_compose ("%1 MB-flushing 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_ON | 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-flushed note %2/%3 at %4\n",
this, (int) note, (int) channel, time));
}
}
}
_on = 0;
}
void
MidiNoteTracker::dump (ostream& o)
{