opencv/modules/flann/include/opencv2/flann/matrix.h

/***********************************************************************
 * 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
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 * modification, are permitted provided that the following conditions
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#ifndef _OPENCV_DATASET_H_
#define _OPENCV_DATASET_H_

#include <stdio.h>

#include "opencv2/flann/general.h"


namespace cvflann 
{

/**
* Class that implements a simple rectangular matrix stored in a memory buffer and
* provides convenient matrix-like access using the [] operators.
*/
template <typename T>
class Matrix {
public:
    size_t rows;
    size_t cols;
    T* data;

    Matrix() : rows(0), cols(0), data(NULL)
    {
    }

    Matrix(T* data_, long rows_, long cols_) :
    	 rows(rows_), cols(cols_), data(data_)
	{
	}

    /**
     * Convenience function for deallocating the storage data.
     */
    void release()
    {
        if (data!=NULL) delete[] data;
    }

	~Matrix()
	{
	}

    /**
    * Operator that return a (pointer to a) row of the data.
    */
    T* operator[](size_t index)
    {
        return data+index*cols;
    }

    T* operator[](size_t index) const
    {
        return data+index*cols;
    }
};


class UntypedMatrix
{
public:
    size_t rows;
    size_t cols;
    void* data;
    flann_datatype_t type;

    UntypedMatrix(void* data_, long rows_, long cols_) :
    	 rows(rows_), cols(cols_), data(data_)
    {
    }

    ~UntypedMatrix()
    {
    }


    template<typename T>
    Matrix<T> as()
    {
        return Matrix<T>((T*)data, rows, cols);
    }
};



} // namespace cvflann

#endif //_OPENCV_DATASET_H_