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+/*
+-----------------------------------------------------------------------
+Copyright 2012 iMinds-Vision Lab, University of Antwerp
+
+Contact: astra@ua.ac.be
+Website: http://astra.ua.ac.be
+
+
+This file is part of the
+All Scale Tomographic Reconstruction Antwerp Toolbox ("ASTRA Toolbox").
+
+The ASTRA Toolbox 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 3 of the License, or
+(at your option) any later version.
+
+The ASTRA Toolbox 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 the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------
+$Id$
+*/
+
+#ifndef _INC_ASTRA_CUDAEMALGORITHM
+#define _INC_ASTRA_CUDAEMALGORITHM
+
+#include "Globals.h"
+#include "Config.h"
+
+#include "CudaReconstructionAlgorithm2D.h"
+
+#ifdef ASTRA_CUDA
+
+namespace astra {
+
+class _AstraExport CCudaEMAlgorithm : public CCudaReconstructionAlgorithm2D
+{
+	
+public:
+	
+	// type of the algorithm, needed to register with CAlgorithmFactory
+	static std::string type;
+	
+	/** Default constructor, containing no code.
+	 */
+	CCudaEMAlgorithm();
+	
+	/** Destructor.
+	 */
+	virtual ~CCudaEMAlgorithm();
+
+	/** Initialize the algorithm with a config object.
+	 *
+	 * @param _cfg Configuration Object
+	 * @return initialization successful?
+	 */
+	virtual bool initialize(const Config& _cfg);
+
+	/** Initialize class.
+	 *
+	 * @param _pProjector		Projector Object. (Ignored)
+	 * @param _pSinogram		ProjectionData2D object containing the sinogram data.
+	 * @param _pReconstruction	VolumeData2D object for storing the reconstructed volume.
+	 * @param _iGPUindex		GPU to use.
+	 * @param _iDetectorSuperSampling Supersampling factor for the FP.
+	 */
+	bool initialize(CProjector2D* _pProjector,
+	                CFloat32ProjectionData2D* _pSinogram, 
+					CFloat32VolumeData2D* _pReconstruction,
+	                int _iGPUindex = 0, int _iDetectorSuperSampling = 1,
+	                int _iPixelSuperSampling = 1);
+
+	/** Get a description of the class.
+	 *
+	 * @return description string
+	 */
+	virtual std::string description() const;
+};
+
+// inline functions
+inline std::string CCudaEMAlgorithm::description() const { return CCudaEMAlgorithm::type; };
+
+} // end namespace
+
+#endif // ASTRA_CUDA
+
+#endif