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87 lines
2.8 KiB
87 lines
2.8 KiB
/* |
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* |
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* histogramNPP.cuh |
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* |
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* Implementation of histogram that uses the NVIDIA Performance Primitives. |
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* |
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* Requires: No minimum SM requirement. |
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* |
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* Copyright (c) 2013, Archaea Software, LLC. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include <npp.h> |
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void |
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GPUhistogramNPP( |
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float *ms, |
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unsigned int *pHist, |
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const unsigned char *dptrBase, size_t dptrPitch, |
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int x, int y, |
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int w, int h, |
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dim3 threads ) |
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{ |
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cudaError_t status; |
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Npp8u *pDeviceBuffer = 0; |
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NppiSize oSizeROI = {w, h}; |
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const int binCount = 256; |
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const int levelCount = binCount+1; |
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cudaEvent_t start = 0, stop = 0; |
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cuda(EventCreate( &start, 0 ) ); |
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cuda(EventCreate( &stop, 0 ) ); |
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// create device scratch buffer for nppiHistogram |
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int nDeviceBufferSize; |
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nppiHistogramEvenGetBufferSize_8u_C1R(oSizeROI, levelCount ,&nDeviceBufferSize); |
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cuda(Malloc((void **)&pDeviceBuffer, nDeviceBufferSize) ); |
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cuda(EventRecord( start, 0 ) ); |
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// compute the histogram |
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if ( NPP_NO_ERROR != nppiHistogramEven_8u_C1R( |
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(const Npp8u *) dptrBase, |
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dptrPitch, |
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oSizeROI, |
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(Npp32s *) pHist, |
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levelCount, 0, binCount, |
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pDeviceBuffer ) ) |
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goto Error; |
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cuda(EventRecord( stop, 0 ) ); |
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cuda(DeviceSynchronize() ); |
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cuda(EventElapsedTime( ms, start, stop ) ); |
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Error: |
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cudaEventDestroy( start ); |
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cudaEventDestroy( stop ); |
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cudaFree( pDeviceBuffer ); |
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return; |
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} |
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