Method processNote

src/core/InstrumentFunctions.cpp:229–272

void InstrumentFunctionNoteStacking::processNote( NotePlayHandle * _n )
{
	const int base_note_key = _n->key();
	const ChordTable & chord_table = ChordTable::getInstance();
	// we add chord-subnotes to note if either note is a base-note and
	// arpeggio is not used or note is part of an arpeggio
	// at the same time we only add sub-notes if nothing of the note was
	// played yet, because otherwise we would add chord-subnotes every
	// time an audio-buffer is rendered...
	if( ( _n->origin() == NotePlayHandle::OriginArpeggio || ( _n->hasParent() == false && _n->instrumentTrack()->isArpeggioEnabled() == false ) ) &&
			_n->totalFramesPlayed() == 0 &&
			m_chordsEnabledModel.value() == true && ! _n->isReleased() )
	{
		// then insert sub-notes for chord
		const int selected_chord = m_chordsModel.value();

		for( int octave_cnt = 0; octave_cnt < m_chordRangeModel.value(); ++octave_cnt )
		{
			const int sub_note_key_base = base_note_key + octave_cnt * KeysPerOctave;

			// process all notes in the chord
			for( int i = 0; i < chord_table[selected_chord].size(); ++i )
			{
				// add interval to sub-note-key
				const int sub_note_key = sub_note_key_base + (int) chord_table[selected_chord][i];
				// maybe we're out of range -> let's get outta
				// here!
				if( sub_note_key > NumKeys )
				{
					break;
				}
				// create copy of base-note
				Note note_copy( _n->length(), 0, sub_note_key, _n->getVolume(), _n->getPanning(), _n->detuning() );

				// create sub-note-play-handle, only note is
				// different
				Engine::mixer()->addPlayHandle(
						NotePlayHandleManager::acquire( _n->instrumentTrack(), _n->offset(), _n->frames(), note_copy,
									_n, -1, NotePlayHandle::OriginNoteStacking )
						);
			}
		}
	}
}