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diff --git a/src/ladspaplugin.h b/src/ladspaplugin.h
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+++ b/src/ladspaplugin.h
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+/*
+    Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
+    
+    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 __LADSPAPLUGIN_H
+#define __LADSPAPLUGIN_H
+
+#include <lv2/lv2plug.in/ns/lv2core/lv2.h>
+
+
+/* This class name is now a misnomer but I have left it as-is to minimize
+   fragmentation.  The following typedefs serve the same purpose, so the
+   plugins can be built with the correct LV2 type (e.g. uint32_t instead of
+   unsigned long) but the actual DSP code has only been changed to use the
+   typedef rather than 'hard' switching it to the new type.  This way, it
+   should be straightforward to make the same code build as both LADSPA and LV2
+   plugins, though since the upstream situation is unclear I have not done
+   done so.  ~ David Robillard, Aug. 2012 */
+
+typedef unsigned long SampleRate;
+typedef unsigned long SampleCount;
+typedef unsigned long PortIndex;
+typedef void          PortData;
+
+class LadspaPlugin
+{
+public:
+
+  LadspaPlugin (SampleRate fsam) : _gain (1.0), _fsam (fsam) {}
+
+  virtual void setport (PortIndex port, PortData *data) = 0;  
+  virtual void active  (bool act) = 0;  
+  virtual void runproc (SampleCount len, bool add) = 0;  
+  virtual ~LadspaPlugin (void) {}
+
+  void setgain (float gain) { _gain = gain; }
+
+protected:
+
+  float _gain;
+  float _fsam;
+};
+
+
+
+#endif