Method processInEvent

src/tracks/InstrumentTrack.cpp:243–379

void InstrumentTrack::processInEvent( const MidiEvent& event, const MidiTime& time, f_cnt_t offset )
{
	if( Engine::getSong()->isExporting() )
	{
		return;
	}

	bool eventHandled = false;

	switch( event.type() )
	{
		// we don't send MidiNoteOn, MidiNoteOff and MidiKeyPressure
		// events to instrument as NotePlayHandle will send them on its
		// own
		case MidiNoteOn:
			if( event.velocity() > 0 )
			{
				if( m_notes[event.key()] == NULL )
				{
					NotePlayHandle* nph =
						NotePlayHandleManager::acquire(
								this, offset,
								typeInfo<f_cnt_t>::max() / 2,
								Note( MidiTime(), MidiTime(), event.key(), event.volume( midiPort()->baseVelocity() ) ),
								NULL, event.channel(),
								NotePlayHandle::OriginMidiInput );
					m_notes[event.key()] = nph;
					if( ! Engine::mixer()->addPlayHandle( nph ) )
					{
						m_notes[event.key()] = NULL;
					}
				}
				eventHandled = true;
				break;
			}

		case MidiNoteOff:
			if( m_notes[event.key()] != NULL )
			{
				// do actual note off and remove internal reference to NotePlayHandle (which itself will
				// 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();
			}
			eventHandled = true;
			break;

		case MidiKeyPressure:
			if( m_notes[event.key()] != NULL )
			{