88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
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/***********************************************************************
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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 SAVING_H_
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#define SAVING_H_
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#include "constants.h"
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#include "nn_index.h"
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namespace flann
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{
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/**
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* Structure representing the index header.
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*/
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struct IndexHeader
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{
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char signature[16];
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int flann_version;
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flann_algorithm_t index_type;
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int rows;
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int cols;
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};
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/**
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* Saves index header to stream
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*
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* @param stream - Stream to save to
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* @param index - The index to save
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*/
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void save_header(FILE* stream, const NNIndex& index);
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/**
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*
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* @param stream - Stream to load from
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* @return Index header
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*/
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IndexHeader load_header(FILE* stream);
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template<typename T>
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void save_value(FILE* stream, const T& value, int count = 1)
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{
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fwrite(&value, sizeof(value),count, stream);
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}
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template<typename T>
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void load_value(FILE* stream, T& value, int count = 1)
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{
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int read_cnt = fread(&value, sizeof(value),count, stream);
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if (read_cnt!=count) {
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throw FLANNException("Cannot read from file");
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}
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}
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}
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#endif /* SAVING_H_ */
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