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diff --git a/cinelerra-5.1/plugins/histeq/histeq.h b/cinelerra-5.1/plugins/histeq/histeq.h
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+++ b/cinelerra-5.1/plugins/histeq/histeq.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 HISTOGRAM_H
+#define HISTOGRAM_H
+
+
+#include "histeq.inc"
+#include "loadbalance.h"
+#include "bccolors.h"
+#include "pluginvclient.h"
+
+class HistEqConfig {
+public:
+	HistEqConfig();
+	~HistEqConfig();
+
+	int split;
+	int plot;
+	float blend;
+	float gain;
+
+	void copy_from(HistEqConfig &that);
+	int equivalent(HistEqConfig &that);
+	void interpolate(HistEqConfig &prev, HistEqConfig &next,
+		int64_t prev_frame, int64_t next_frame, int64_t current_frame);
+};
+
+class HistEqSplit : public BC_CheckBox
+{
+public:
+	HistEqSplit(HistEqWindow *gui, HistEqMain *plugin, int x, int y);
+	~HistEqSplit();
+	int handle_event();
+
+	HistEqWindow *gui;
+	HistEqMain *plugin;
+};
+
+class HistEqPlot : public BC_CheckBox
+{
+public:
+	HistEqPlot(HistEqWindow *gui, HistEqMain *plugin, int x, int y);
+	~HistEqPlot();
+	int handle_event();
+
+	HistEqWindow *gui;
+	HistEqMain *plugin;
+};
+
+class HistEqBlend : public BC_FSlider
+{
+public:
+	HistEqBlend(HistEqWindow *gui, HistEqMain *plugin, int x, int y);
+	~HistEqBlend();
+	int handle_event();
+
+	HistEqWindow *gui;
+	HistEqMain *plugin;
+};
+
+class HistEqGain : public BC_FSlider
+{
+public:
+	HistEqGain(HistEqWindow *gui, HistEqMain *plugin, int x, int y);
+	~HistEqGain();
+	int handle_event();
+
+	HistEqWindow *gui;
+	HistEqMain *plugin;
+};
+
+class HistEqCanvas : public BC_SubWindow
+{
+public:
+        HistEqCanvas(HistEqWindow *gui, HistEqMain *plugin,
+                int x, int y, int w, int h);
+	void clear();
+	void draw_bins(HistEqMain *plugin);
+	void draw_wts(HistEqMain *plugin);
+	void draw_reg(HistEqMain *plugin);
+	void draw_lut(HistEqMain *plugin);
+	void update(HistEqMain *plugin);
+
+        HistEqMain *plugin;
+        HistEqWindow *gui;
+};
+
+class HistEqWindow : public PluginClientWindow
+{
+public:
+	HistEqWindow(HistEqMain *plugin);
+	~HistEqWindow();
+
+	HistEqMain *plugin;
+	HistEqSplit *split;
+	HistEqPlot *plot;
+	HistEqBlend *blend;
+	HistEqGain *gain;
+	HistEqCanvas *canvas;
+
+	void create_objects();
+	void update();
+};
+
+class HistEqMain : public PluginVClient
+{
+public:
+	HistEqMain(PluginServer *server);
+	~HistEqMain();
+
+	int process_buffer(VFrame *frame, int64_t start_position, double frame_rate);
+	int is_realtime();
+	void save_data(KeyFrame *keyframe);
+	void read_data(KeyFrame *keyframe);
+	void update_gui();
+
+	void render_gui(void *data);
+
+	PLUGIN_CLASS_MEMBERS(HistEqConfig)
+
+	VFrame *input, *output;
+	HistEqEngine *engine;
+	int w, h;
+	int sz;
+	double a, b;
+	int binsz, bsz, *bins;
+	int lutsz, lsz, *lut;
+	int wsz;  float *wts;
+};
+
+class HistEqPackage : public LoadPackage
+{
+public:
+	HistEqPackage();
+	int y0, y1;
+};
+
+class HistEqUnit : public LoadClient
+{
+public:
+	HistEqUnit(HistEqEngine *server, HistEqMain *plugin);
+	~HistEqUnit();
+	void process_package(LoadPackage *package);
+	HistEqEngine *server;
+	HistEqMain *plugin;
+	int valid;
+	int binsz, *bins;
+};
+
+class HistEqEngine : public LoadServer
+{
+public:
+	HistEqEngine(HistEqMain *plugin, int total_clients, int total_packages);
+	void process_packages(int operation, VFrame *data);
+	void init_packages();
+	LoadClient* new_client();
+	LoadPackage* new_package();
+	HistEqMain *plugin;
+	int operation;
+
+	enum { HISTEQ, APPLY };
+	VFrame *data;
+};
+
+#endif