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oskar_grid_wproj_gpu.hpp
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/*
* Copyright (c) 2016, The University of Oxford
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of the University of Oxford nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "Defines.h"
#pragma once
/**
* @brief
* Gridding function for W-projection (double precision).
*
* @details
* Gridding function for W-projection.
*
* @param[in] num_w_planes Number of W-projection planes.
* @param[in] support GCF support size per W-plane.
* @param[in] oversample GCF oversample factor.
* @param[in] conv_size_half Side length of W-kernel cube.
* @param[in] conv_func GCF cube (W-kernels).
* @param[in] num_vis Number of visibility points.
* @param[in] uu Baseline UU coordinates, in wavelengths.
* @param[in] vv Baseline VV coordinates, in wavelengths.
* @param[in] ww Baseline WW coordinates, in wavelengths.
* @param[in] vis Complex visibilities for each baseline.
* @param[in] weight Visibility weight for each baseline.
* @param[in] cell_size_rad Cell size, in radians.
* @param[in] w_scale Scaling factor used to find W-plane index.
* @param[in] grid_size Side length of grid.
* @param[out] num_skipped Number of visibilities that fell outside the grid.
* @param[in,out] norm Updated grid normalisation factor.
* @param[in,out] grid Updated complex visibility grid.
*/
void oskar_grid_wproj_d_gpu(const int num_w_planes, const int* support,
const int oversample, const int conv_size_half,
const double* conv_func, const int num_vis,
const double* uu, const double* vv,
const double* ww, const double* vis,
const double* weight, const double cell_size_rad,
const double w_scale, const int grid_size, size_t* num_skipped,
double* norm, double* grid);
/**
* @brief
* Gridding function for W-projection (single precision).
*
* @details
* Gridding function for W-projection.
*
* @param[in] num_w_planes Number of W-projection planes.
* @param[in] support GCF support size per W-plane.
* @param[in] oversample GCF oversample factor.
* @param[in] conv_size_half Side length of W-kernel cube.
* @param[in] conv_func GCF cube (W-kernels).
* @param[in] num_vis Number of visibility points.
* @param[in] uu Baseline UU coordinates, in wavelengths.
* @param[in] vv Baseline VV coordinates, in wavelengths.
* @param[in] ww Baseline WW coordinates, in wavelengths.
* @param[in] vis Complex visibilities for each baseline.
* @param[in] weight Visibility weight for each baseline.
* @param[in] cell_size_rad Cell size, in radians.
* @param[in] w_scale Scaling factor used to find W-plane index.
* @param[in] grid_size Side length of grid.
* @param[out] num_skipped Number of visibilities that fell outside the grid.
* @param[in,out] norm Updated grid normalisation factor.
* @param[in,out] grid Updated complex visibility grid.
*/
void oskar_grid_wproj_f_gpu(const int num_w_planes, const int* support,
const int oversample, const int conv_size_half,
const float* conv_func, const int num_vis,
const float* uu, const float* vv,
const float* ww, const float* vis,
const float* weight, const double cell_size_rad,
const double w_scale, const int grid_size, size_t* num_skipped,
double* norm, float* grid);
void oskar_grid_wproj_gpu(const int num_w_planes, const int* support,
const int oversample, const int conv_size_half,
const REAL* conv_func, const int num_vis,
const REAL* uu, const REAL* vv,
const REAL* ww, const REAL* vis,
const REAL* weight, const double cell_size_rad,
const double w_scale, const int grid_size, size_t* num_skipped,
double* norm, REAL* grid);