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diff --git a/source/blender/compositor/intern/COM_CompositorContext.h b/source/blender/compositor/intern/COM_CompositorContext.h
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+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+#ifndef _COM_CompositorContext_h
+#define _COM_CompositorContext_h
+
+#include <vector>
+#include "BKE_text.h"
+#include <string>
+#include "DNA_node_types.h"
+#include "BLI_rect.h"
+#include "DNA_scene_types.h"
+#include "COM_defines.h"
+
+/**
+  * @brief Overall context of the compositor
+  */
+class CompositorContext {
+private:
+	/**
+	  * @brief The rendering field describes if we are rendering (F12) or if we are editing (Node editor)
+	  * This field is initialized in ExecutionSystem and must only be read from that point on.
+	  * @see ExecutionSystem
+	  */
+	bool rendering;
+
+	/**
+	  * @brief The quality of the composite.
+	  * This field is initialized in ExecutionSystem and must only be read from that point on.
+	  * @see ExecutionSystem
+	  */
+	CompositorQuality quality;
+
+	/**
+	  * @brief Reference to the scene that is being composited.
+	  * This field is initialized in ExecutionSystem and must only be read from that point on.
+	  * @see ExecutionSystem
+	  */
+	Scene* scene;
+
+	/**
+	  * @brief reference to the bNodeTree
+	  * This field is initialized in ExecutionSystem and must only be read from that point on.
+	  * @see ExecutionSystem
+	  */
+	bNodeTree* bnodetree;
+
+	/**
+	  * @brief does this system have active opencl devices?
+	  */
+	bool hasActiveOpenCLDevices;
+
+public:
+	/**
+	  * @brief constructor initializes the context with default values.
+	  */
+	CompositorContext();
+
+	/**
+	  * @brief set the rendering field of the context
+	  */
+	void setRendering(bool rendering) { this->rendering = rendering; }
+
+	/**
+	  * @brief get the rendering field of the context
+	  */
+	bool isRendering() const {return this->rendering;}
+
+	/**
+	  * @brief set the scene of the context
+	  */
+	void setScene(Scene* scene) {this->scene = scene;}
+
+	/**
+	  * @brief set the bnodetree of the context
+	  */
+	void setbNodeTree(bNodeTree* bnodetree) {this->bnodetree = bnodetree;}
+
+	/**
+	  * @brief get the bnodetree of the context
+	  */
+	const bNodeTree * getbNodeTree() const {return this->bnodetree;}
+
+	/**
+	  * @brief get the scene of the context
+	  */
+	const Scene* getScene() const {return this->scene;}
+
+	/**
+	  * @brief set the quality
+	  */
+	void setQuality(CompositorQuality quality) {
+		this->quality = quality;
+	}
+
+	/**
+	  * @brief get the quality
+	  */
+	const CompositorQuality getQuality() const {
+		return quality;
+	}
+
+	/**
+	  * @brief get the current framenumber of the scene in this context
+	  */
+	const int getFramenumber() const;
+
+	/**
+	  * @brief has this system active openclDevices?
+	  */
+	const bool getHasActiveOpenCLDevices() const {
+		return this->hasActiveOpenCLDevices;
+	}
+
+	/**
+	  * @brief set has this system active openclDevices?
+	  */
+	void setHasActiveOpenCLDevices(bool hasAvtiveOpenCLDevices) {
+		this->hasActiveOpenCLDevices = hasAvtiveOpenCLDevices;
+	}
+	
+	int getChunksize() {return this->getbNodeTree()->chunksize;}
+	
+	const int isColorManaged() const;
+};
+
+
+#endif