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diff --git a/cinelerra-5.1/plugins/interpolatevideo/opticflow.h b/cinelerra-5.1/plugins/interpolatevideo/opticflow.h
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+++ b/cinelerra-5.1/plugins/interpolatevideo/opticflow.h
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+/*
+ * CINELERRA
+ * Copyright (C) 1997-2011 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 OPTICFLOW_H
+#define OPTICFLOW_H
+
+
+#include "interpolatevideo.inc"
+#include "loadbalance.h"
+#include "motionscan.inc"
+#include "opticflow.inc"
+
+// Need a 2nd table if a large number of packages
+class OpticFlowMacroblock
+{
+public:
+	OpticFlowMacroblock();
+	void copy_from(OpticFlowMacroblock *src);
+	
+	int x, y;
+	int dx, dy;
+	int is_valid;
+// Temporaries for blending macroblocks
+	float angle1, angle2;
+	float dist;
+	int visible;
+};
+
+class OpticFlowPackage : public LoadPackage
+{
+public:
+	OpticFlowPackage();
+	int macroblock0;
+	int macroblock1;
+};
+
+class OpticFlowUnit : public LoadClient
+{
+public:
+	OpticFlowUnit(OpticFlow *server);
+	~OpticFlowUnit();
+	void process_package(LoadPackage *package);
+	MotionScan *motion;
+	OpticFlow *server;
+};
+
+
+class OpticFlow : public LoadServer
+{
+public:
+	OpticFlow(InterpolateVideo *plugin,
+		int total_clients, 
+		int total_packages);
+	~OpticFlow();
+	void init_packages();
+	LoadClient* new_client();
+	LoadPackage* new_package();
+	InterpolateVideo *plugin;
+};
+
+
+
+
+
+
+
+
+
+class WarpPackage : public LoadPackage
+{
+public:
+	WarpPackage();
+	int y1, y2;
+};
+
+class WarpUnit : public LoadClient
+{
+public:
+	WarpUnit(Warp *server);
+	~WarpUnit();
+	void process_package(LoadPackage *package);
+	Warp *server;
+};
+
+
+class Warp : public LoadServer
+{
+public:
+	Warp(InterpolateVideo *plugin,
+		int total_clients, 
+		int total_packages);
+	~Warp();
+	void init_packages();
+	LoadClient* new_client();
+	LoadPackage* new_package();
+	InterpolateVideo *plugin;
+};
+
+
+
+
+
+
+class BlendPackage : public LoadPackage
+{
+public:
+	BlendPackage();
+	int number0, number1;
+};
+
+
+
+class BlendMacroblockUnit : public LoadClient
+{
+public:
+	BlendMacroblockUnit(BlendMacroblock *server);
+	~BlendMacroblockUnit();
+	void process_package(LoadPackage *package);
+	BlendMacroblock *server;
+};
+
+
+class BlendMacroblock : public LoadServer
+{
+public:
+	BlendMacroblock(InterpolateVideo *plugin,
+		int total_clients, 
+		int total_packages);
+	~BlendMacroblock();
+	void init_packages();
+	LoadClient* new_client();
+	LoadPackage* new_package();
+	InterpolateVideo *plugin;
+};
+
+
+
+
+
+#endif
+
+