added base64-support functions

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@64 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/sample_buffer.h

@@ -1,7 +1,7 @@
 /*
  * sample_buffer.h - container-class sampleBuffer
  *
- * Copyright (c) 2005 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2005-2006 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -124,7 +124,7 @@ public:
 
 	QString openAudioFile( void ) const;
 
-	QString toBase64( void ) const;
+	QString & toBase64( QString & _dst ) const;
 
 
 	static sampleBuffer * FASTCALL resample( sampleFrame * _data,