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triggerbox: sort-of-mostly get MIDITriggers to work

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Repeated loops can eventually go wrong, as can arbitrary stops
This commit is contained in:
Paul Davis 2021-10-27 22:54:40 -06:00
parent 031f39d9d1
commit 2b9b08aa22
2 changed files with 19 additions and 9 deletions
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2
libs/ardour/ardour/triggerbox.h
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@ -36,6 +36,7 @@
#include "temporal/bbt_time.h"
#include "temporal/tempo.h"
#include "ardour/midi_state_tracker.h"
#include "ardour/processor.h"
#include "ardour/rt_midibuffer.h"
@ -305,6 +306,7 @@ class LIBARDOUR_API MIDITrigger : public Trigger {
private:
PBD::ID data_source;
RTMidiBuffer data;
MidiStateTracker tracker;
size_t read_index; /* index into data */
samplecnt_t data_length; /* using timestamps from data */

24
libs/ardour/triggerbox.cc
View File

@ -1180,10 +1180,19 @@ MIDITrigger::load_data (boost::shared_ptr<MidiRegion> mr)
{
drop_data ();
/* this generates timestamps in session time. We want trigger-relative
* time (so the beginning of the region/trigger is zero).
*/
mr->render_range (data, 0, Sustained, mr->start(), mr->length(), 0);
const sampleoffset_t shift = mr->position().samples();
data.shift (-shift);
set_name (mr->name());
data_length = data.span();
DEBUG_TRACE (DEBUG::Triggers, string_compose ("%1 loaded midi region, span is %2\n", name(), data_length));
return 0;
}
@ -1209,7 +1218,7 @@ MIDITrigger::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sam
zero. Offset them to give us process/timeline timestamps.
*/
const samplepos_t effective_time = transition_samples + item.timestamp + (_loop_cnt * data_length); /* XXX handle multiple loops */
const samplepos_t effective_time = transition_samples + item.timestamp + (_loop_cnt * data_length);
// cerr << "Item " << read_index << " @ " << item.timestamp << " + " << transition_samples << " = " << effective_time << endl;
@ -1224,8 +1233,7 @@ MIDITrigger::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sam
DEBUG_TRACE (DEBUG::Triggers, string_compose ("inserting %1\n", ev));
mb.insert_event (ev);
// _tracker.track (bytes);
tracker.track (bytes);
read_index++;
} else {
@ -1236,18 +1244,17 @@ MIDITrigger::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sam
/* We reached the end */
// _tracker.resolve_notes (mb);
cerr << "reached end of data\n";
_loop_cnt++;
if ((_loop_cnt == _follow_count) || (_launch_style == Repeat) || (_box.peek_next_trigger() == this)) { /* self repeat */
DEBUG_TRACE (DEBUG::Triggers, string_compose ("%1 reached end, but set to loop, so retrigger\n", index()));
/* We need to preserve end_run_sample across
* this retrigger, since we're just continuing
* to "run()" the trigger without a break.
/* we will "restart" at the beginning of the
next iteration of the trigger.
*/
samplepos_t old_ers = end_run_sample;
transition_samples = _loop_cnt * data_length;
retrigger ();
/* and go around again */
continue;
@ -1264,6 +1271,7 @@ MIDITrigger::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_sam
if (_state == Stopping) {
DEBUG_TRACE (DEBUG::Triggers, string_compose ("%1 was stopping, now stopped\n", index()));
tracker.resolve_notes (mb, end_sample);
shutdown ();
}