From 1e3ad60eb63e277d3eee83c9186330a4a0f04225 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Mon, 20 Jan 2014 13:44:31 +0100
Subject: take all tracks inside a midi-file into account when loading model

* fixes [region] length calculation,
* prepare for auditioning midi files (one track plays it all)
---
 libs/ardour/smf_source.cc | 92 ++++++++++++++++++++++++++++-------------------
 1 file changed, 56 insertions(+), 36 deletions(-)

(limited to 'libs/ardour/smf_source.cc')

diff --git a/libs/ardour/smf_source.cc b/libs/ardour/smf_source.cc
index 3a1029fd73..b2d01d24d2 100644
--- a/libs/ardour/smf_source.cc
+++ b/libs/ardour/smf_source.cc
@@ -476,6 +476,12 @@ SMFSource::safe_midi_file_extension (const string& file)
 	return true;
 }
 
+static bool compare_eventlist (
+		const std::pair< Evoral::Event<double>*, gint >& a,
+		const std::pair< Evoral::Event<double>*, gint >& b) {
+	return ( a.first->time() < b.first->time() );
+}
+
 void
 SMFSource::load_model (bool lock, bool force_reload)
 {
@@ -514,60 +520,74 @@ SMFSource::load_model (bool lock, bool force_reload)
 	uint8_t* buf     = NULL;
 	int ret;
 	gint event_id;
-	bool have_event_id = false;
-
-	while ((ret = read_event (&delta_t, &size, &buf, &event_id)) >= 0) {
+	bool have_event_id;
 
-		time += delta_t;
+	// TODO simplify event allocation
+	std::list< std::pair< Evoral::Event<double>*, gint > > eventlist;
 
-		if (ret == 0) {
+	for (unsigned i = 1; i <= num_tracks(); ++i) {
+		if (seek_to_track(i)) continue;
 
-			/* meta-event : did we get an event ID ?
-			 */
-
-			if (event_id >= 0) {
-				have_event_id = true;
-			}
+		time = 0;
+		have_event_id = false;
 
-			continue;
-		}
+		while ((ret = read_event (&delta_t, &size, &buf, &event_id)) >= 0) {
 
-		if (ret > 0) {
+			time += delta_t;
 
-			/* not a meta-event */
+			if (ret == 0) {
+				/* meta-event : did we get an event ID ?  */
+				if (event_id >= 0) {
+					have_event_id = true;
+				}
+				continue;
+			}
 
-			ev.set (buf, size, time / (double)ppqn());
-			ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
+			if (ret > 0) {
+				/* not a meta-event */
 
-			if (!have_event_id) {
-				event_id = Evoral::next_event_id();
-			}
+				if (!have_event_id) {
+					event_id = Evoral::next_event_id();
+				}
+				uint32_t event_type = EventTypeMap::instance().midi_event_type(buf[0]);
+				double   event_time = time / (double) ppqn();
 #ifndef NDEBUG
-			std::string ss;
+				std::string ss;
 
-			for (uint32_t xx = 0; xx < size; ++xx) {
-				char b[8];
-				snprintf (b, sizeof (b), "0x%x ", buf[xx]);
-				ss += b;
-			}
+				for (uint32_t xx = 0; xx < size; ++xx) {
+					char b[8];
+					snprintf (b, sizeof (b), "0x%x ", buf[xx]);
+					ss += b;
+				}
 
-			DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF %6 load model delta %1, time %2, size %3 buf %4, type %5\n",
-			                                                  delta_t, time, size, ss , ev.event_type(), name()));
+				DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("SMF %6 load model delta %1, time %2, size %3 buf %4, type %5\n",
+							delta_t, time, size, ss , event_type, name()));
 #endif
 
-			_model->append (ev, event_id);
+				eventlist.push_back(make_pair (
+							new Evoral::Event<double> (
+								event_type, event_time,
+								size, buf, true)
+							, event_id));
 
-			// Set size to max capacity to minimize allocs in read_event
-			scratch_size = std::max(size, scratch_size);
-			size = scratch_size;
+				// Set size to max capacity to minimize allocs in read_event
+				scratch_size = std::max(size, scratch_size);
+				size = scratch_size;
 
-			_length_beats = max(_length_beats, ev.time());
+				_length_beats = max(_length_beats, event_time);
+			}
+
+			/* event ID's must immediately precede the event they are for */
+			have_event_id = false;
 		}
+	}
 
-		/* event ID's must immediately precede the event they are for
-		 */
+	eventlist.sort(compare_eventlist);
 
-		have_event_id = false;
+	std::list< std::pair< Evoral::Event<double>*, gint > >::iterator it;
+	for (it=eventlist.begin(); it!=eventlist.end(); ++it) {
+		_model->append (*it->first, it->second);
+		delete it->first;
 	}
 
 	_model->end_write (Evoral::Sequence<Evoral::MusicalTime>::ResolveStuckNotes, _length_beats);
-- 
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