opencv/modules/gpu/cuda/mat_operators.cu

/*M///////////////////////////////////////////////////////////////////////////////////////
//
//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
//  By downloading, copying, installing or using the software you agree to this license.
//  If you do not agree to this license, do not download, install,
//  copy or use the software.
//
//
//                           License Agreement
//                For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//   * Redistribution's of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//
//   * Redistribution's 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.
//
//   * The name of the copyright holders may not 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 Intel Corporation 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.
//
//M*/

#include <stddef.h>
#include "cuda_shared.hpp"
#include "cuda_runtime.h"

__constant__ float scalar_d[4];

namespace mat_operators
{

    template <typename T, int channels, int count = channels>
    struct unroll
    {
        __device__ static void unroll_set(T * mat, size_t i)
        {
            mat[i] = static_cast<T>(scalar_d[i % channels]);
            unroll<T, channels, count - 1>::unroll_set(mat, i+1);
        }
    };

    template <typename T, int channels>
    struct unroll<T,channels,0>
    {
        __device__ static void unroll_set(T * , size_t){}
    };



    template <typename T, int channels>
    __global__ void kernel_set_to_without_mask(T * mat)
    {
        size_t i = (blockIdx.x * blockDim.x + threadIdx.x) * sizeof(T);
        unroll<T, channels>::unroll_set(mat, i);
    }
}


extern "C" void cv::gpu::impl::set_to_with_mask(const DevMem2D& mat, const double * scalar, const DevMem2D& mask, int depth, int channels)
{

}

extern "C" void cv::gpu::impl::set_to_without_mask(const DevMem2D& mat, const double * scalar, int depth, int channels)
{
    scalar_d[0] = scalar[0];
    scalar_d[1] = scalar[1];
    scalar_d[2] = scalar[2];
    scalar_d[3] = scalar[3];

    int numBlocks = mat.rows * mat.step / 256;

    dim3 threadsPerBlock(256);

    if (channels == 1)
    {
        if (depth == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char,  1><<<numBlocks,threadsPerBlock>>>(mat.ptr);
        if (depth == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 1><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr);
        if (depth == 4) ::mat_operators::kernel_set_to_without_mask<unsigned int,   1><<<numBlocks,threadsPerBlock>>>((unsigned int *)mat.ptr);
    }
    if (channels == 2)
    {
        if (depth == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char,  2><<<numBlocks,threadsPerBlock>>>(mat.ptr);
        if (depth == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 2><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr);
        if (depth == 4) ::mat_operators::kernel_set_to_without_mask<unsigned int,   2><<<numBlocks,threadsPerBlock>>>((unsigned int *)mat.ptr);
    }
    if (channels == 3)
    {
        if (depth == 1) ::mat_operators::kernel_set_to_without_mask<unsigned char,  3><<<numBlocks,threadsPerBlock>>>(mat.ptr);
        if (depth == 2) ::mat_operators::kernel_set_to_without_mask<unsigned short, 3><<<numBlocks,threadsPerBlock>>>((unsigned short *)mat.ptr);
        if (depth == 4) ::mat_operators::kernel_set_to_without_mask<unsigned int,   3><<<numBlocks,threadsPerBlock>>>((unsigned int *)mat.ptr);
    }
}