cuda-samples/Common/UtilNPP/ImageAllocatorsCPU.h

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2022-01-13 14:05:24 +08:00
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of NVIDIA CORPORATION 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 ``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 OWNER 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.
*/
#ifndef NV_UTIL_NPP_IMAGE_ALLOCATORS_CPU_H
#define NV_UTIL_NPP_IMAGE_ALLOCATORS_CPU_H
#include "Exceptions.h"
namespace npp
{
template <typename D, size_t N>
class ImageAllocatorCPU
{
public:
static
D *
Malloc2D(unsigned int nWidth, unsigned int nHeight, unsigned int *pPitch)
{
NPP_ASSERT(nWidth * nHeight > 0);
D *pResult = new D[nWidth * N * nHeight];
*pPitch = nWidth * sizeof(D) * N;
return pResult;
};
static
void
Free2D(D *pPixels)
{
delete[] pPixels;
};
static
void
Copy2D(D *pDst, size_t nDstPitch, const D *pSrc, size_t nSrcPitch, size_t nWidth, size_t nHeight)
{
const void *pSrcLine = pSrc;
void *pDstLine = pDst;
for (size_t iLine = 0; iLine < nHeight; ++iLine)
{
// copy one line worth of data
memcpy(pDst, pSrc, nWidth * N * sizeof(D));
// move data pointers to next line
pDst += nDstPitch;
pSrc += nSrcPitch;
}
};
};
} // npp namespace
#endif // NV_UTIL_NPP_IMAGE_ALLOCATORS_CPU_H