131 lines
5.5 KiB
C++
131 lines
5.5 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other GpuMaterials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef __OPENCV_GPU_DEVMEM2D_HPP__
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#define __OPENCV_GPU_DEVMEM2D_HPP__
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namespace cv
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{
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namespace gpu
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{
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// Simple lightweight structures that encapsulates information about an image on device.
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// It is intended to pass to nvcc-compiled code. GpuMat depends on headers that nvcc can't compile
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#if defined(__CUDACC__)
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#define __CV_GPU_HOST_DEVICE__ __host__ __device__
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#else
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#define __CV_GPU_HOST_DEVICE__
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#endif
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template <typename T> struct DevMem2D_
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{
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int cols;
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int rows;
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T* data;
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size_t step;
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DevMem2D_() : cols(0), rows(0), data(0), step(0) {}
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DevMem2D_(int rows_, int cols_, T *data_, size_t step_)
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: cols(cols_), rows(rows_), data(data_), step(step_) {}
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template <typename U>
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explicit DevMem2D_(const DevMem2D_<U>& d)
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: cols(d.cols), rows(d.rows), data((T*)d.data), step(d.step) {}
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typedef T elem_type;
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enum { elem_size = sizeof(elem_type) };
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__CV_GPU_HOST_DEVICE__ size_t elemSize() const { return elem_size; }
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__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return (T*)( (char*)data + y * step ); }
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__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return (const T*)( (const char*)data + y * step ); }
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};
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template<typename T> struct PtrStep_
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{
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T* data;
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size_t step;
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PtrStep_() : data(0), step(0) {}
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PtrStep_(const DevMem2D_<T>& mem) : data(mem.data), step(mem.step) {}
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typedef T elem_type;
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enum { elem_size = sizeof(elem_type) };
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__CV_GPU_HOST_DEVICE__ size_t elemSize() const { return elem_size; }
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__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return (T*)( (char*)data + y * step); }
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__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return (const T*)( (const char*)data + y * step); }
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};
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template <bool> struct StaticCheck;
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template <> struct StaticCheck<true>{};
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template<typename T> struct PtrElemStep_ : public PtrStep_<T>
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{
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PtrElemStep_(const DevMem2D_<T>& mem) : PtrStep_<T>(mem)
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{
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PtrStep_<T>::step /= PtrStep_<T>::elem_size;
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}
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__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return PtrStep_<T>::data + y * PtrStep_<T>::step; }
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__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return PtrStep_<T>::data + y * PtrStep_<T>::step; }
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private:
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StaticCheck<256 % sizeof(T) == 0> ElemStepTypeCheck;
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};
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typedef DevMem2D_<unsigned char> DevMem2D;
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typedef DevMem2D_<float> DevMem2Df;
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typedef DevMem2D_<int> DevMem2Di;
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typedef PtrStep_<unsigned char> PtrStep;
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typedef PtrStep_<float> PtrStepf;
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typedef PtrStep_<int> PtrStepi;
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typedef PtrElemStep_<unsigned char> PtrElemStep;
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typedef PtrElemStep_<float> PtrElemStepf;
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typedef PtrElemStep_<int> PtrElemStepi;
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#undef __CV_GPU_HOST_DEVICE__
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}
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}
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#endif /* __OPENCV_GPU_DEVMEM2D_HPP__ */
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