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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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#include "common.h"
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#include "saving.h"
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#include "nn_index.h"
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#include <cstdio>
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namespace cvflann
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{
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const char FLANN_SIGNATURE[] = "FLANN_INDEX";
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void save_header(FILE* stream, const NNIndex& index)
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{
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IndexHeader header;
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memset(header.signature, 0 , sizeof(header.signature));
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strcpy(header.signature, FLANN_SIGNATURE);
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header.flann_version = (int)FLANN_VERSION;
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header.index_type = index.getType();
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header.rows = index.size();
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header.cols = index.veclen();
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std::fwrite(&header, sizeof(header),1,stream);
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}
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IndexHeader load_header(FILE* stream)
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{
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IndexHeader header;
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int read_size = fread(&header,sizeof(header),1,stream);
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if (read_size!=1) {
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throw FLANNException("Invalid index file, cannot read");
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}
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if (strcmp(header.signature,FLANN_SIGNATURE)!=0) {
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throw FLANNException("Invalid index file, wrong signature");
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}
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return header;
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}
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}
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