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/******************************************************************************
*
* Project: libLAS - http://liblas.org - A BSD library for LAS format data.
* Purpose: Test reading and writing of large LAS files (>4GB)
* using portable Boost.IOStreams library.
* Author: Mateusz Loskot, mateusz@loskot.net
*
******************************************************************************
* Copyright (c) 2010, Mateusz Loskot
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the Martin Isenburg or Iowa Department
* of Natural Resources nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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 <liblas/point.hpp>
#include <liblas/reader.hpp>
#include <liblas/writer.hpp>
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4702)
#endif
#include <boost/iostreams/device/file_descriptor.hpp>
#include <boost/iostreams/positioning.hpp>
#include <boost/iostreams/stream.hpp>
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#include <cassert>
#include <exception>
#include <iostream>
#include <sstream>
#include <stdexcept>
namespace bio = boost::iostreams;
namespace las = liblas;
int main()
{
try
{
// name of generated file
std::string filename("bigfile_bio_test.las");
// test writing mor than 204 million points
bio::stream_offset const n_million_points = 210;
bio::stream_offset const point_count = 1024 * 1024 * n_million_points;
std::cout.setf(std::ios::fixed, std::ios::floatfield);
std::cout.setf(std::ios::showpoint);
std::cout.precision(2);
std::cout << "LAS file: " << filename << std::endl;
std::cout << "Writing " << point_count << " points" << std::endl;
{
typedef bio::stream<bio::file_descriptor_sink> bio_ostream;
bio_ostream bigofs(filename);
las::Header header;
las::Writer writer(bigofs, header);
las::Point empty_point(&las::DefaultHeader::get());
bio::stream_offset i = 0;
for (i = 0; i < point_count; ++i)
{
if (!writer.WritePoint(empty_point))
{
std::ostringstream oss;
oss << "failed to write point #" << i;
throw std::runtime_error(oss.str());
}
if (i % 1000 == 0)
{
std::cout << "\b\b\b\b\b\b\b\b" << double(i)/point_count * 100.0;
}
}
assert(i == point_count);
}
std::cout << std::endl << "Reading " << point_count << " points" << std::endl;
{
typedef bio::stream<bio::file_descriptor_source> bio_istream;
bio_istream bigifs(filename);
las::Reader reader(bigifs);
bio::stream_offset i = 0;
while (reader.ReadNextPoint())
{
las::Point const& p = reader.GetPoint();
if (!p.Validate())
{
std::ostringstream oss;
oss << "invalid point around #" << i;
throw std::runtime_error(oss.str());
}
if (i % 1000 == 0)
{
std::cout << "\b\b\b\b\b\b\b\b" << double(i)/point_count * 100.0;
}
++i;
}
assert(i == point_count);
}
std::cout << std::endl << "Done." << std::endl;
return EXIT_SUCCESS;
}
catch (std::exception const& e)
{
std::cerr << e.what() << std::endl;
}
return EXIT_FAILURE;
}
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