Method processNextBuffer

src/core/Song.cpp:195–422

void Song::processNextBuffer()
{
	m_vstSyncController.setPlaybackJumped( false );

	// if not playing, nothing to do
	if( m_playing == false )
	{
		return;
	}

	TrackList trackList;
	int tcoNum = -1; // track content object number

	// determine the list of tracks to play and the track content object
	// (TCO) number
	switch( m_playMode )
	{
		case Mode_PlaySong:
			trackList = tracks();
			// at song-start we have to reset the LFOs
			if( m_playPos[Mode_PlaySong] == 0 )
			{
				EnvelopeAndLfoParameters::instances()->reset();
			}
			break;

		case Mode_PlayBB:
			if( Engine::getBBTrackContainer()->numOfBBs() > 0 )
			{
				tcoNum = Engine::getBBTrackContainer()->
								currentBB();
				trackList.push_back( BBTrack::findBBTrack(
								tcoNum ) );
			}
			break;

		case Mode_PlayPattern:
			if( m_patternToPlay != NULL )
			{
				tcoNum = m_patternToPlay->getTrack()->
						getTCONum( m_patternToPlay );
				trackList.push_back(
						m_patternToPlay->getTrack() );
			}
			break;

		default:
			return;

	}

	// if we have no tracks to play, nothing to do
	if( trackList.empty() == true )
	{
		return;
	}

	// check for looping-mode and act if necessary