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diff --git a/cinelerra-5.1/plugins/polar/polar.h b/cinelerra-5.1/plugins/polar/polar.h
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+++ b/cinelerra-5.1/plugins/polar/polar.h
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#ifndef POLAR_H
+#define POLAR_H
+
+#define MAXDEPTH 100
+#define MAXANGLE 360
+
+class PolarMain;
+class PolarEngine;
+
+#include "bcbase.h"
+#include "polarwindow.h"
+#include "pluginvclient.h"
+
+
+class PolarMain : public PluginVClient
+{
+public:
+	PolarMain(int argc, char *argv[]);
+	~PolarMain();
+
+// required for all realtime plugins
+	PLUGIN_CLASS_MEMBERS(PolarConfig)
+	int process_realtime(long size, VFrame **input_ptr, VFrame **output_ptr);
+	int plugin_is_realtime();
+	int plugin_is_multi_channel();
+	int save_data(char *text);
+	int read_data(char *text);
+
+// parameters needed
+	int reconfigure();    // Rebuild tables
+	int depth;
+	int angle;
+	int polar_to_rectangular;
+	int backwards;
+	int inverse;
+	int automated_function;
+	int reconfigure_flag;
+	VFrame *temp_frame;
+
+
+private:
+	PolarEngine **engine;
+};
+
+class PolarEngine : public Thread
+{
+public:
+	PolarEngine(PolarMain *plugin, int start_y, int end_y);
+	~PolarEngine();
+	
+	int start_process_frame(VFrame **output, VFrame **input, int size);
+	int wait_process_frame();
+	void run();
+	void get_pixel(const int &x, const int &y, VPixel *pixel, VPixel **input_rows);
+	int calc_undistorted_coords(int wx,
+			 int wy,
+			 double &x,
+			 double &y);
+	inline VWORD bilinear(double &x, double &y, VWORD *values)
+	{
+		double m0, m1;
+		x = fmod(x, 1.0);
+		y = fmod(y, 1.0);
+
+		if(x < 0.0) x += 1.0;
+		if(y < 0.0) y += 1.0;
+
+		m0 = (double)values[0] + x * ((double)values[1] - values[0]);
+		m1 = (double)values[2] + x * ((double)values[3] - values[2]);
+		return (VWORD)(m0 + y * (m1 - m0));
+	}
+	
+	PolarMain *plugin;
+	int start_y;
+	int end_y;
+	int size;
+	double cen_x, cen_y;
+	VFrame **output, **input;
+	int last_frame;
+	Mutex input_lock, output_lock;
+};
+
+
+#endif