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OpenCV/include/opencv2/flann/matrix.h

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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 OPENCV_FLANN_DATASET_H_
+#define OPENCV_FLANN_DATASET_H_
+
+//! @cond IGNORED
+
+#include <stdio.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:
+    typedef T type;
+
+    size_t rows;
+    size_t cols;
+    size_t stride;
+    T* data;
+
+    Matrix() : rows(0), cols(0), stride(0), data(NULL)
+    {
+    }
+
+    Matrix(T* data_, size_t rows_, size_t cols_, size_t stride_ = 0) :
+        rows(rows_), cols(cols_),  stride(stride_), data(data_)
+    {
+        if (stride==0) stride = cols;
+    }
+
+    /**
+     * Convenience function for deallocating the storage data.
+     */
+    CV_DEPRECATED void free()
+    {
+        fprintf(stderr, "The cvflann::Matrix<T>::free() method is deprecated "
+                "and it does not do any memory deallocation any more.  You are"
+                "responsible for deallocating the matrix memory (by doing"
+                "'delete[] matrix.data' for example)");
+    }
+
+    /**
+     * Operator that return a (pointer to a) row of the data.
+     */
+    T* operator[](size_t index) const
+    {
+        return data+index*stride;
+    }
+};
+
+
+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);
+    }
+};
+
+
+
+}
+
+//! @endcond
+
+#endif //OPENCV_FLANN_DATASET_H_