cuda_gpu_geo_shift_transformer.h

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/***************************************************************************
 *
 * Authors:    David Strelak (davidstrelak@gmail.com)
 *
 * Unidad de  Bioinformatica of Centro Nacional de Biotecnologia , CSIC
 *
 * 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
 *
 *  All comments concerning this program package may be sent to the
 *  e-mail address 'xmipp@cnb.csic.es'
 ***************************************************************************/

#ifndef CUDA_GEO_SHIFT_TRANSFORMER
#define CUDA_GEO_SHIFT_TRANSFORMER

#include <assert.h>
#include <exception>
#include "core/multidim_array.h"
#include "reconstruction/gpu_geo_transformer_defines.h"
#include "cuda_xmipp_utils.h"
#include "gpu.h"

template<typename T>
class GeoShiftTransformer {

public:
    GeoShiftTransformer() :
        device(-1), imgs(NULL), ffts(NULL), stream(NULL), isReady(false) {
    };

    ~GeoShiftTransformer() {
        release();
    }

    void init(const GPU &gpu, size_t x, size_t y, size_t n, int device, myStreamHandle *stream);

    void initLazy(const GPU &gpu, size_t x, size_t y, size_t n, int device,
            myStreamHandle *stream = NULL);

    void release();

    template<typename T_IN>
    void applyShift(MultidimArray<T> &output, const MultidimArray<T_IN> &input,
            T shiftX, T shiftY);

    void test();

private:
    template<typename T_IN>
    void checkRestrictions(MultidimArray<T> &output,
            const MultidimArray<T_IN> &input);

private:
    bool isReady;

    int device;
    myStreamHandle* stream;

    const GPU *m_gpu;

    GpuMultidimArrayAtGpu<T> *imgs; // object for FFT
    mycufftHandle fftHandle; // plan of the FFT
    GpuMultidimArrayAtGpu<std::complex<T> > *ffts; // object for FFT
    mycufftHandle ifftHandle; // plan of the FFT
};
#endif // CUDA_GEO_SHIFT_TRANSFORMER