pyrdown.cpp 3.97 KB
Newer Older
wester committed
1 2 3 4 5 6 7 8 9 10 11 12 13
/*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) 2010-2012, Multicoreware, Inc., all rights reserved.
wester committed
14
// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
wester committed
15 16
// Third party copyrights are property of their respective owners.
//
wester committed
17 18 19 20 21
// @Authors
//        Dachuan Zhao, dachuan@multicorewareinc.com
//        Yao Wang, yao@multicorewareinc.com
//
//
wester committed
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
// 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*/
wester committed
47 48
#include "precomp.hpp"
#include "opencl_kernels.hpp"
wester committed
49

wester committed
50 51
using namespace cv;
using namespace cv::ocl;
wester committed
52

wester committed
53 54 55 56
//////////////////////////////////////////////////////////////////////////////
/////////////////////// add subtract multiply divide /////////////////////////
//////////////////////////////////////////////////////////////////////////////
static void pyrdown_run(const oclMat &src, const oclMat &dst)
wester committed
57 58
{

wester committed
59 60
    CV_Assert(src.type() == dst.type());
    CV_Assert(src.depth() != CV_8S);
wester committed
61

wester committed
62 63
    Context  *clCxt = src.clCxt;
    string kernelName = "pyrDown";
wester committed
64

wester committed
65 66
    size_t localThreads[3]  = { 256, 1, 1 };
    size_t globalThreads[3] = { (size_t)src.cols, (size_t)dst.rows, 1};
wester committed
67

wester committed
68 69 70 71 72 73 74 75
    vector<pair<size_t , const void *> > args;
    args.push_back( make_pair( sizeof(cl_mem), (void *)&src.data ));
    args.push_back( make_pair( sizeof(cl_int), (void *)&src.step ));
    args.push_back( make_pair( sizeof(cl_int), (void *)&src.rows));
    args.push_back( make_pair( sizeof(cl_int), (void *)&src.cols));
    args.push_back( make_pair( sizeof(cl_mem), (void *)&dst.data ));
    args.push_back( make_pair( sizeof(cl_int), (void *)&dst.step ));
    args.push_back( make_pair( sizeof(cl_int), (void *)&dst.cols));
wester committed
76

wester committed
77
    openCLExecuteKernel(clCxt, &pyr_down, kernelName, globalThreads, localThreads, args, src.oclchannels(), src.depth());
wester committed
78
}
wester committed
79 80
//////////////////////////////////////////////////////////////////////////////
// pyrDown
wester committed
81

wester committed
82 83 84 85 86
void cv::ocl::pyrDown(const oclMat &src, oclMat &dst)
{
    int depth = src.depth(), channels = src.channels();
    CV_Assert(depth == CV_8U || depth == CV_16U || depth == CV_16S || depth == CV_32F);
    CV_Assert(channels == 1 || channels == 3 || channels == 4);
wester committed
87

wester committed
88
    dst.create((src.rows + 1) / 2, (src.cols + 1) / 2, src.type());
wester committed
89

wester committed
90 91
    pyrdown_run(src, dst);
}