/usr/include/flann/util/matrix.h is in libflann-dev 1.8.4-4.1.
This file is owned by root:root, with mode 0o644.
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* Software License Agreement (BSD License)
*
* Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
* Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
*
* THE BSD LICENSE
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 FLANN_DATASET_H_
#define FLANN_DATASET_H_
#include "flann/general.h"
#include "flann/util/serialization.h"
#include <stdio.h>
namespace flann
{
typedef unsigned char uchar;
class Matrix_
{
public:
Matrix_() : rows(0), cols(0), stride(0), type(FLANN_NONE), data(NULL)
{
};
Matrix_(void* data_, size_t rows_, size_t cols_, flann_datatype_t type_, size_t stride_ = 0) :
rows(rows_), cols(cols_), stride(stride_), type(type_)
{
data = static_cast<uchar*>(data_);
if (stride==0) stride = flann_datatype_size(type)*cols;
}
/**
* Operator that returns a (pointer to a) row of the data.
*/
inline void* operator[](size_t index) const
{
return data+index*stride;
}
void* ptr() const
{
return data;
}
size_t rows;
size_t cols;
size_t stride;
flann_datatype_t type;
protected:
uchar* data;
template<typename Archive>
void serialize(Archive& ar)
{
ar & rows;
ar & cols;
ar & stride;
ar & type;
if (Archive::is_loading::value) {
data = new uchar[rows*stride];
}
ar & serialization::make_binary_object(data, rows*stride);
}
friend struct serialization::access;
};
/**
* Class that implements a simple rectangular matrix stored in a memory buffer and
* provides convenient matrix-like access using the [] operators.
*
* This class has the same memory structure as the un-templated class flann::Matrix_ and
* it's directly convertible from it.
*/
template <typename T>
class Matrix : public Matrix_
{
public:
typedef T type;
Matrix() : Matrix_()
{
}
Matrix(T* data_, size_t rows_, size_t cols_, size_t stride_ = 0) :
Matrix_(data_, rows_, cols_, flann_datatype_value<T>::value, stride_)
{
if (stride==0) stride = sizeof(T)*cols;
}
/**
* Operator that returns a (pointer to a) row of the data.
*/
inline T* operator[](size_t index) const
{
return reinterpret_cast<T*>(data+index*stride);
}
T* ptr() const
{
return reinterpret_cast<T*>(data);
}
};
}
#endif //FLANN_DATASET_H_
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