Fix recording of single streamed instruments(regression in #3774) (#3803)

* Revert "same note layering when sustain pedal is pressed (#3774)"

This reverts commit e387e77445.

* Fix recording of sustained notes

include/InstrumentTrack.h

@@ -237,6 +237,7 @@ private:
 	MidiPort m_midiPort;
 
 	NotePlayHandle* m_notes[NumKeys];
+	NotePlayHandleList m_sustainedNotes;
 
 	int m_runningMidiNotes[NumKeys];
 	QMutex m_midiNotesMutex;

src/core/NotePlayHandle.cpp

@@ -252,17 +252,8 @@ void NotePlayHandle::play( sampleFrame * _working_buffer )
 	if( m_released && (!instrumentTrack()->isSustainPedalPressed() ||
 		m_releaseStarted) )
 	{
-		if (m_releaseStarted == false)
-		{
+		m_releaseStarted = true;
 
-			if( m_origin == OriginMidiInput )
-			{
-				setLength( MidiTime( static_cast<f_cnt_t>( totalFramesPlayed() / Engine::framesPerTick() ) ) );
-				m_instrumentTrack->midiNoteOff( *this );
-			}
-
-			m_releaseStarted = true;
-		}
 		f_cnt_t todo = framesThisPeriod;
 
 		// if this note is base-note for arpeggio, always set
@@ -389,6 +380,16 @@ void NotePlayHandle::noteOff( const f_cnt_t _s )
 				MidiTime::fromFrames( _s, Engine::framesPerTick() ),
 				_s );
 	}
+
+	// inform attached components about MIDI finished (used for recording in Piano Roll)
+	if (!instrumentTrack()->isSustainPedalPressed())
+	{
+		if( m_origin == OriginMidiInput )
+		{
+			setLength( MidiTime( static_cast<f_cnt_t>( totalFramesPlayed() / Engine::framesPerTick() ) ) );
+			m_instrumentTrack->midiNoteOff( *this );
+		}
+	}
 }
 
 

src/tracks/InstrumentTrack.cpp

@@ -278,6 +278,12 @@ void InstrumentTrack::processInEvent( const MidiEvent& event, const MidiTime& ti
 				// be deleted later automatically)
 				Engine::mixer()->requestChangeInModel();
 				m_notes[event.key()]->noteOff( offset );
+				if (isSustainPedalPressed() &&
+					m_notes[event.key()]->origin() ==
+					m_notes[event.key()]->OriginMidiInput)
+				{
+					m_sustainedNotes << m_notes[event.key()];
+				}
 				m_notes[event.key()] = NULL;
 				Engine::mixer()->doneChangeInModel();
 			}
@@ -307,8 +313,24 @@ void InstrumentTrack::processInEvent( const MidiEvent& event, const MidiTime& ti
 				{
 					m_sustainPedalPressed = true;
 				}
-				else
+				else if (isSustainPedalPressed())
 				{
+					for (NotePlayHandle* nph : m_sustainedNotes)
+					{
+						if (nph && nph->isReleased())
+						{
+							if( nph->origin() ==
+								nph->OriginMidiInput)
+							{
+								nph->setLength(
+									MidiTime( static_cast<f_cnt_t>(
+									nph->totalFramesPlayed() /
+									Engine::framesPerTick() ) ) );
+								midiNoteOff( *nph );
+							}
+						}
+					}
+					m_sustainedNotes.clear();
 					m_sustainPedalPressed = false;
 				}
 			}