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136 lines
3.7 KiB
136 lines
3.7 KiB
/***********************************************************************
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* Software License Agreement (BSD License)
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*
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* Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
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* Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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*
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* THE BSD LICENSE
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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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*************************************************************************/
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#ifndef FLANN_DATASET_H_
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#define FLANN_DATASET_H_
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#include "FLANN/general.h"
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#include "FLANN/util/serialization.h"
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#include <stdio.h>
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namespace flann
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{
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typedef unsigned char uchar;
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class Matrix_
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{
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public:
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Matrix_() : rows(0), cols(0), stride(0), type(FLANN_NONE), data(NULL)
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{
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};
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Matrix_(void* data_, size_t rows_, size_t cols_, flann_datatype_t type_, size_t stride_ = 0) :
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rows(rows_), cols(cols_), stride(stride_), type(type_)
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{
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data = static_cast<uchar*>(data_);
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if (stride==0) stride = flann_datatype_size(type)*cols;
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}
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/**
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* Operator that returns a (pointer to a) row of the data.
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*/
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inline void* operator[](size_t index) const
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{
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return data+index*stride;
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}
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void* ptr() const
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{
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return data;
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}
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size_t rows;
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size_t cols;
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size_t stride;
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flann_datatype_t type;
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protected:
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uchar* data;
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template<typename Archive>
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void serialize(Archive& ar)
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{
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ar & rows;
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ar & cols;
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ar & stride;
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ar & type;
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if (Archive::is_loading::value) {
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data = new uchar[rows*stride];
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}
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ar & serialization::make_binary_object(data, rows*stride);
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}
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friend struct serialization::access;
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};
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/**
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* Class that implements a simple rectangular matrix stored in a memory buffer and
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* provides convenient matrix-like access using the [] operators.
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*
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* This class has the same memory structure as the un-templated class flann::Matrix_ and
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* it's directly convertible from it.
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*/
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template <typename T>
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class Matrix : public Matrix_
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{
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public:
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typedef T type;
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Matrix() : Matrix_()
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{
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}
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Matrix(T* data_, size_t rows_, size_t cols_, size_t stride_ = 0) :
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Matrix_(data_, rows_, cols_, flann_datatype_value<T>::value, stride_)
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{
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if (stride==0) stride = sizeof(T)*cols;
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}
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/**
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* Operator that returns a (pointer to a) row of the data.
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*/
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inline T* operator[](size_t index) const
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{
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return reinterpret_cast<T*>(data+index*stride);
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}
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T* ptr() const
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{
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return reinterpret_cast<T*>(data);
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}
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};
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}
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#endif //FLANN_DATASET_H_
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