some optimizations to ocl::pyrDown, PyrLK and Canny
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bitwangyaoyao
129
modules/ocl/src/mcwutil.cpp
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129
modules/ocl/src/mcwutil.cpp
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/*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) 2010-2012, Multicoreware, Inc., all rights reserved.
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// Copyright (C) 2010-2012, Advanced Micro Devices, 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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// @Authors
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// Peng Xiao, pengxiao@multicorewareinc.com
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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 oclMaterials 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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#include "mcwutil.hpp"
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#if defined (HAVE_OPENCL)
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using namespace std;
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namespace cv
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{
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namespace ocl
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{
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inline int divUp(int total, int grain)
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{
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return (total + grain - 1) / grain;
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}
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// provide additional methods for the user to interact with the command queue after a task is fired
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void openCLExecuteKernel_2(Context *clCxt , const char **source, string kernelName, size_t globalThreads[3],
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size_t localThreads[3], vector< pair<size_t, const void *> > &args, int channels,
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int depth, char *build_options, FLUSH_MODE finish_mode)
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{
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//construct kernel name
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//The rule is functionName_Cn_Dn, C represent Channels, D Represent DataType Depth, n represent an integer number
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//for exmaple split_C2_D2, represent the split kernel with channels =2 and dataType Depth = 2(Data type is char)
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stringstream idxStr;
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if(channels != -1)
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idxStr << "_C" << channels;
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if(depth != -1)
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idxStr << "_D" << depth;
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kernelName += idxStr.str();
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cl_kernel kernel;
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kernel = openCLGetKernelFromSource(clCxt, source, kernelName, build_options);
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if ( localThreads != NULL)
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{
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globalThreads[0] = divUp(globalThreads[0], localThreads[0]) * localThreads[0];
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globalThreads[1] = divUp(globalThreads[1], localThreads[1]) * localThreads[1];
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globalThreads[2] = divUp(globalThreads[2], localThreads[2]) * localThreads[2];
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size_t blockSize = localThreads[0] * localThreads[1] * localThreads[2];
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cv::ocl::openCLVerifyKernel(clCxt, kernel, &blockSize, globalThreads, localThreads);
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}
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for(int i = 0; i < args.size(); i ++)
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openCLSafeCall(clSetKernelArg(kernel, i, args[i].first, args[i].second));
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openCLSafeCall(clEnqueueNDRangeKernel(clCxt->impl->clCmdQueue, kernel, 3, NULL, globalThreads,
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localThreads, 0, NULL, NULL));
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switch(finish_mode)
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{
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case CLFINISH:
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clFinish(clCxt->impl->clCmdQueue);
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case CLFLUSH:
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clFlush(clCxt->impl->clCmdQueue);
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break;
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case DISABLE:
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default:
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break;
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}
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openCLSafeCall(clReleaseKernel(kernel));
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}
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void openCLExecuteKernel2(Context *clCxt , const char **source, string kernelName,
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size_t globalThreads[3], size_t localThreads[3],
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vector< pair<size_t, const void *> > &args, int channels, int depth, FLUSH_MODE finish_mode)
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{
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openCLExecuteKernel2(clCxt, source, kernelName, globalThreads, localThreads, args,
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channels, depth, NULL, finish_mode);
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}
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void openCLExecuteKernel2(Context *clCxt , const char **source, string kernelName,
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size_t globalThreads[3], size_t localThreads[3],
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vector< pair<size_t, const void *> > &args, int channels, int depth, char *build_options, FLUSH_MODE finish_mode)
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{
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openCLExecuteKernel_2(clCxt, source, kernelName, globalThreads, localThreads, args, channels, depth,
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build_options, finish_mode);
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}
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}//namespace ocl
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}//namespace cv
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#endif
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