/*
-----------------------------------------------------------------------
Copyright: 2010-2016, iMinds-Vision Lab, University of Antwerp
           2014-2016, CWI, Amsterdam

Contact: astra@uantwerpen.be
Website: http://www.astra-toolbox.com/

This file is part of the 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/>.

-----------------------------------------------------------------------
*/

#ifndef _CUDA_UTIL_H
#define _CUDA_UTIL_H

#include <cuda.h>
#include <driver_types.h>
#include <string>

#ifdef _MSC_VER

#ifdef DLL_EXPORTS
#define _AstraExport __declspec(dllexport)
#define EXPIMP_TEMPLATE
#else
#define _AstraExport __declspec(dllimport)
#define EXPIMP_TEMPLATE extern
#endif

#else

#define _AstraExport

#endif

#include "dims.h"

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif

#define ASTRA_CUDA_ASSERT(err) do {  if (err != cudaSuccess) { astraCUDA::reportCudaError(err); assert(err == cudaSuccess); } } while(0)


namespace astraCUDA {

bool copyVolumeToDevice(const float* in_data, unsigned int in_pitch,
		const SDimensions& dims,
		float* outD_data, unsigned int out_pitch);
bool copyVolumeFromDevice(float* out_data, unsigned int out_pitch,
		const SDimensions& dims,
		float* inD_data, unsigned int in_pitch);
bool copySinogramFromDevice(float* out_data, unsigned int out_pitch,
		const SDimensions& dims,
		float* inD_data, unsigned int in_pitch);
bool copySinogramToDevice(const float* in_data, unsigned int in_pitch,
		const SDimensions& dims,
		float* outD_data, unsigned int out_pitch);

bool allocateVolume(float*& D_ptr, unsigned int width, unsigned int height, unsigned int& pitch);
void zeroVolume(float* D_data, unsigned int pitch, unsigned int width, unsigned int height);

bool allocateVolumeData(float*& D_ptr, unsigned int& pitch, const SDimensions& dims);
bool allocateProjectionData(float*& D_ptr, unsigned int& pitch, const SDimensions& dims);
void zeroVolumeData(float* D_ptr, unsigned int pitch, const SDimensions& dims);
void zeroProjectionData(float* D_ptr, unsigned int pitch, const SDimensions& dims);

void duplicateVolumeData(float* D_dst, float* D_src, unsigned int pitch, const SDimensions& dims);
void duplicateProjectionData(float* D_dst, float* D_src, unsigned int pitch, const SDimensions& dims);



bool cudaTextForceKernelsCompletion();
void reportCudaError(cudaError_t err);



float dotProduct2D(float* D_data, unsigned int pitch,
                   unsigned int width, unsigned int height);

// Return string with CUDA device number, name and memory size.
// Use device == -1 to get info for the current device.
_AstraExport std::string getCudaDeviceString(int device);

}

#endif