#ifndef H_OPENCL_GREENSFUNCTION
#define H_OPENCL_GREENSFUNCTION

#include <iostream>
#include <cmath>

#include "../Algorithms/GreensFunction.h"
#include "OpenCLBase.h"

class OpenCLGreensFunction : public GreensFunction {

private:

  bool base_create;
  OpenCLBase *m_base;

public:

  /** Constructor with OpenCLBase argument */
  OpenCLGreensFunction(OpenCLBase *base);

  /** Default constructor */
  OpenCLGreensFunction();

  /** Destructor */
  ~OpenCLGreensFunction();

  /** Load OpenCL kernel file containing greens function kernels.
   *  m_base takes the kernel file and compiles the OpenCL programm.
   */
  int buildProgram();

  /**
    Info: calc itegral on device memory (taken from OPAL src code)
    Return: success or error code
  */
  int greensIntegral(void *tmpgreen, int I, int J, int K, int NI, int NJ, 
		       double hr_m0, double hr_m1, double hr_m2, 
		       int streamId = -1);
		
  /**
    Info: integration of rho2_m field (taken from OPAL src code)
    Return: success or error code
  */
  int integrationGreensFunction(void *rho2_m, void *tmpgreen, int I, int J, int K,
				  int streamId = -1);
		
  /**
    Info: mirror rho field (taken from OPAL src code)
    Return: succes or error code
  */
  int mirrorRhoField(void *rho2_m, int I, int J, int K, int streamId = -1);

  /**
    Info: multiply complex fields already on the GPU memory, result will be put in ptr1
    Return: success or error code
  */
  int multiplyCompelxFields(void *ptr1, void *ptr2, int size, int streamId = -1);

};


#endif H_OPENCL_GREENSFUNCTION