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