refactor playlist sources to allow for MIDI and upcoming work on save/restore

git-svn-id: svn://localhost/ardour2/branches/3.0@9521 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 55 insertions, 0 deletions

diff --git a/libs/ardour/ardour/playlist_source.h b/libs/ardour/ardour/playlist_source.h
new file mode 100644
index 0000000000..8732870ec0
--- /dev/null
+++ b/libs/ardour/ardour/playlist_source.h
@@ -0,0 +1,55 @@
+/*
+    Copyright (C) 2011 Paul Davis
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_playlist_source_h__
+#define __ardour_playlist_source_h__
+
+#include <string>
+
+#include <boost/shared_ptr.hpp>
+
+#include "ardour/ardour.h"
+#include "ardour/source.h"
+
+namespace ARDOUR {
+
+class Playlist;
+
+class PlaylistSource : virtual public Source {
+  public:
+    virtual ~PlaylistSource ();
+    
+    int set_state (const XMLNode&, int version);
+    
+  protected:
+    boost::shared_ptr<Playlist>      _playlist;
+    frameoffset_t                    _playlist_offset;
+    framecnt_t                       _playlist_length;
+
+    PlaylistSource (Session&, const std::string& name, boost::shared_ptr<Playlist>, DataType,
+		    frameoffset_t begin, framecnt_t len, Source::Flag flags);
+    PlaylistSource (Session&, const XMLNode&);
+    
+    void add_state (XMLNode&);
+
+};
+        
+} /* namespace */
+
+#endif /* __ardour_playlist_source_h__ */