allow zero-input (i.e. tone generator) processors to be added
[ardour2.git] / libs / pbd / command.cc
blob452223317b06922783930b23b7a358f7b033f083
1 /*
2 Copyright (C) 2000-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "pbd/command.h"
21 #include "pbd/xml++.h"
23 XMLNode &Command::get_state()
25 XMLNode *node = new XMLNode ("Command");
26 node->add_content("WARNING: Somebody forgot to subclass Command.");
27 return *node;