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zipwriter_test.cpp
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zipwriter_test.cpp
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//
// (C) Copyright 2010 Michael P. Gerlek (mpg@flaxen.com)
// Distributed under the BSD License
// (See accompanying file LICENSE.txt or copy at
// http://www.opensource.org/licenses/bsd-license.php)
//
#ifdef HAVE_LASZIP
#include <liblas/liblas.hpp>
#include <tut/tut.hpp>
#include <cstdio>
#include <bitset>
#include <fstream>
#include <string>
#include "liblas_test.hpp"
#include "common.hpp"
namespace tut
{
struct zipwriter_data
{
std::string file_laz;
std::string header_10;
std::string header_10_vlr;
std::string header_12;
std::string header_12_vlr;
std::string header_10_compressed;
std::string header_10_compressed_vlr;
std::string header_12_compressed;
std::string header_12_compressed_vlr;
std::string header_12_padded;
std::string header_12_too_small_pad;
zipwriter_data() :
file_laz(g_test_data_path + "//tmp.laz"),
header_10(g_test_data_path + "//header-1.0-test.las"),
header_10_vlr(g_test_data_path + "//header-1.0-vlr-test.las"),
header_12(g_test_data_path + "//header-1.2-test.las"),
header_12_vlr(g_test_data_path + "//header-1.2-vlr-test.las"),
header_10_compressed(g_test_data_path + "//header-1.0-compressed-test.laz"),
header_10_compressed_vlr(g_test_data_path + "//header-1.0-compressed-test.laz"),
header_12_compressed(g_test_data_path + "//header-1.2-compressed-test.laz"),
header_12_compressed_vlr(g_test_data_path + "//header-1.2-compressed-test.laz"),
header_12_padded(g_test_data_path + "//header-1.2-padded.laz"),
header_12_too_small_pad(g_test_data_path + "//header-1.2-too-small-pad.laz")
{}
~zipwriter_data()
{
cleanup(file_laz);
cleanup(header_10);
cleanup(header_10_vlr);
cleanup(header_12);
cleanup(header_12_vlr);
cleanup(header_10_compressed);
cleanup(header_10_compressed_vlr);
cleanup(header_12_compressed);
cleanup(header_12_compressed_vlr);
cleanup(header_12_padded);
cleanup(header_12_too_small_pad);
}
void cleanup(std::string const& input)
{
const int ret = std::remove(input.c_str());
if (0 != ret)
{
; // ignore, file may not exist
}
}
void setup( std::string const& input,
liblas::Header const& header)
{
std::ofstream ofs;
ofs.open(input.c_str(), std::ios::out | std::ios::binary);
liblas::Writer writer(ofs, header);
liblas::Point point(&writer.GetHeader());
// Write 1st point
point.SetCoordinates(10, 20, 30);
point.SetIntensity(5);
point.SetReturnNumber(1);
point.SetNumberOfReturns(1);
point.SetScanDirection(1);
point.SetFlightLineEdge(1);
point.SetClassification(7);
point.SetScanAngleRank(90);
point.SetUserData(0);
point.SetPointSourceID(1);
writer.WritePoint(point);
// write 2nd point
point.SetCoordinates(40, 50, 60);
point.SetPointSourceID(2);
writer.WritePoint(point);
// write 3rd point
point.SetCoordinates(70, 80, 90);
point.SetPointSourceID(3);
writer.WritePoint(point);
}
liblas::Header FetchHeader(std::string input)
{
std::ifstream ifs;
ifs.open(input.c_str(), std::ios::in | std::ios::binary);
ensure(ifs.is_open());
liblas::ReaderFactory factory;
liblas::Reader reader = factory.CreateWithStream(ifs);
return reader.GetHeader();
}
liblas::VariableRecord ConstructVLR()
{
liblas::VariableRecord r;
std::vector<boost::uint8_t> vdata;
vdata.resize(256);
for(int i=0; i < 256; i++)
{
vdata[i] = (boost::uint8_t)i;
}
r.SetReserved(0xAABB);
r.SetUserId("HOBU");
r.SetRecordId(1234);
r.SetDescription("some lovely text");
r.SetData(vdata);
r.SetRecordLength((boost::uint16_t)vdata.size());
return r;
}
};
typedef test_group<zipwriter_data> tg;
typedef tg::object to;
tg test_group_zipwriter("liblas::ZipWriter");
// Test ability to make a compressed header
template<>
template<>
void to::test<1>()
{
// Create new LAS file using default header block
{
std::ofstream ofs;
ofs.open(file_laz.c_str(), std::ios::out | std::ios::binary);
// LAS 1.2, Point Format 0
liblas::Header header;
ensure_equals(header.Compressed(), false);
header.SetCompressed(true);
ensure_equals(header.Compressed(), true);
liblas::Writer writer(ofs, header);
}
// Read previously created LAS file and check its header block, laszip VLR
{
std::ifstream ifs;
ifs.open(file_laz.c_str(), std::ios::in | std::ios::binary);
ensure(ifs.is_open());
liblas::ReaderFactory factory;
liblas::Reader reader = factory.CreateWithStream(ifs);
ensure_equals(reader.GetHeader().Compressed(), true);
test_laszip_vlr(reader.GetHeader());
}
return;
}
// Test ability to write a few points, using the writer factory
template<>
template<>
void to::test<2>()
{
{
std::ofstream ofs;
ofs.open(file_laz.c_str(), std::ios::out | std::ios::binary);
// LAS 1.1, Point Format 0
liblas::Header header;
header.SetCompressed(true);
liblas::Writer writer(ofs, header);
liblas::Point point(&writer.GetHeader());
// Write 1st point
point.SetCoordinates(10, 20, 30);
point.SetIntensity(5);
point.SetReturnNumber(1);
point.SetNumberOfReturns(1);
point.SetScanDirection(1);
point.SetFlightLineEdge(1);
point.SetClassification(7);
point.SetScanAngleRank(90);
point.SetUserData(0);
point.SetPointSourceID(1);
writer.WritePoint(point);
// write 2nd point
point.SetCoordinates(40, 50, 60);
point.SetPointSourceID(2);
writer.WritePoint(point);
// write 3rd point
point.SetCoordinates(70, 80, 90);
point.SetPointSourceID(3);
writer.WritePoint(point);
}
// Read previously create LAS file with 3 point records
{
std::ifstream ifs;
ifs.open(file_laz.c_str(), std::ios::in | std::ios::binary);
ensure(ifs.is_open());
liblas::ReaderFactory factory;
liblas::Reader reader = factory.CreateWithStream(ifs);
ensure_equals(reader.GetHeader().Compressed(), true);
liblas::Point point(&reader.GetHeader()); // reusable cache
// read 1st point
bool ok = reader.ReadNextPoint();
ensure_equals(ok, true);
point = reader.GetPoint();
ensure_distance(point.GetX(), 10.0, 0.1);
ensure_distance(point.GetY(), 20.0, 0.1);
ensure_distance(point.GetZ(), 30.0, 0.1);
ensure_equals(point.GetIntensity(), 5);
ensure_equals(point.GetReturnNumber(), 1);
ensure_equals(point.GetNumberOfReturns(), 1);
ensure_equals(point.GetScanDirection(), 1);
ensure_equals(point.GetFlightLineEdge(), 1);
ensure_equals(point.GetScanAngleRank(), 90);
ensure_equals(point.GetUserData(), 0);
ensure_equals(point.GetPointSourceID(), 1);
typedef liblas::Classification::bitset_type bitset_type;
ensure_equals(bitset_type(point.GetClassification()), bitset_type(7));
// read 2nd point
ok = reader.ReadNextPoint();
ensure_equals(ok, true);
point = reader.GetPoint();
ensure_distance(point.GetX(), 40.0, 0.1);
ensure_distance(point.GetY(), 50.0, 0.1);
ensure_distance(point.GetZ(), 60.0, 0.1);
ensure_equals(point.GetIntensity(), 5);
ensure_equals(point.GetReturnNumber(), 1);
ensure_equals(point.GetNumberOfReturns(), 1);
ensure_equals(point.GetScanDirection(), 1);
ensure_equals(point.GetFlightLineEdge(), 1);
ensure_equals(point.GetScanAngleRank(), 90);
ensure_equals(point.GetUserData(), 0);
ensure_equals(point.GetPointSourceID(), 2);
// read 3rd point
ok = reader.ReadNextPoint();
ensure_equals(ok, true);
point = reader.GetPoint();
ensure_distance(point.GetX(), 70.0, 0.1);
ensure_distance(point.GetY(), 80.0, 0.1);
ensure_distance(point.GetZ(), 90.0, 0.1);
ensure_equals(point.GetIntensity(), 5);
ensure_equals(point.GetReturnNumber(), 1);
ensure_equals(point.GetNumberOfReturns(), 1);
ensure_equals(point.GetScanDirection(), 1);
ensure_equals(point.GetFlightLineEdge(), 1);
ensure_equals(point.GetScanAngleRank(), 90);
ensure_equals(point.GetUserData(), 0);
ensure_equals(point.GetPointSourceID(), 3);
typedef liblas::Classification::bitset_type bitset_type;
ensure_equals(bitset_type(point.GetClassification()), bitset_type(7));
return;
}
}
// Test header integrity
template<>
template<>
void to::test<3>()
{
{
liblas::Header header;
header.SetVersionMinor(0);
header.SetHeaderPadding(0);
header.SetCompressed(false);
setup(header_10, header);
}
{
liblas::Header header = FetchHeader(header_10);
ensure_equals("1.0 no-vlr iscompressed?", header.Compressed(), false);
// compression is going to add the LASzip VLR
ensure_equals("1.0 no-vlr data offset", header.GetDataOffset(), (boost::uint32_t)229);
ensure_equals("1.0 no-vlr header padding", header.GetHeaderPadding(), (boost::uint32_t)2);
}
{
liblas::Header header;
header.SetVersionMinor(0);
header.SetHeaderPadding(0);
header.SetCompressed(false);
liblas::VariableRecord v = ConstructVLR();
header.AddVLR(v);
setup(header_10_vlr, header);
}
{
liblas::Header header = FetchHeader(header_10_vlr);
ensure_equals("1.0 vlr iscompressed?", header.Compressed(), false);
// compression is going to add the LASzip VLR
ensure_equals("1.0 vlr data offset", header.GetDataOffset(), (boost::uint32_t)539);
ensure_equals("1.0 vlr header padding", header.GetHeaderPadding(), (boost::uint32_t)2);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(false);
setup(header_12, header);
}
{
liblas::Header header = FetchHeader(header_12);
ensure_equals("1.2 no-vlr iscompressed?", header.Compressed(), false);
// compression is going to add the LASzip VLR
ensure_equals("1.2 no-vlr data offset", header.GetDataOffset(), (boost::uint32_t)227);
ensure_equals("1.2 no-vlr header padding", header.GetHeaderPadding(), (boost::uint32_t)0);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(false);
liblas::VariableRecord v = ConstructVLR();
header.AddVLR(v);
setup(header_12_vlr, header);
}
{
liblas::Header header = FetchHeader(header_12_vlr);
ensure_equals("1.2 vlr iscompressed?", header.Compressed(), false);
// compression is going to add the LASzip VLR
ensure_equals("1.2 vlr data offset", header.GetDataOffset(), (boost::uint32_t)537);
ensure_equals("1.2 vlr header padding", header.GetHeaderPadding(), (boost::uint32_t)0);
}
{
liblas::Header header;
header.SetVersionMinor(0);
header.SetHeaderPadding(0);
header.SetCompressed(true);
setup(header_10_compressed, header);
}
{
liblas::Header header = FetchHeader(header_10_compressed);
ensure_equals("1.0 no-vlr compressed iscompressed?", header.Compressed(), true);
// compression is going to add the LASzip VLR
ensure_equals("1.0 no-vlr compressed data offset", header.GetDataOffset(), (boost::uint32_t)335);
ensure_equals("1.0 no-vlr compressed header padding", header.GetHeaderPadding(), (boost::uint32_t)2);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(true);
setup(header_12_compressed, header);
}
{
liblas::Header header = FetchHeader(header_12_compressed);
ensure_equals("1.2 no-vlr compressed iscompressed?", header.Compressed(), true);
// compression is going to add the LASzip VLR
ensure_equals("1.2 no-vlr compressed data offset", header.GetDataOffset(), (boost::uint32_t)333);
ensure_equals("1.2 no-vlr compressed header padding", header.GetHeaderPadding(), (boost::uint32_t)0);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(true);
liblas::VariableRecord v = ConstructVLR();
header.AddVLR(v);
setup(header_12_compressed_vlr, header);
}
{
liblas::Header header = FetchHeader(header_12_compressed_vlr);
ensure_equals("1.2 vlr compressed iscompressed?", header.Compressed(), true);
// compression is going to add the LASzip VLR
ensure_equals("1.2 vlr compressed data offset", header.GetDataOffset(), (boost::uint32_t)643);
ensure_equals("1.2 vlr compressed header padding", header.GetHeaderPadding(), (boost::uint32_t)0);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(true);
header.SetDataOffset(1024);
liblas::VariableRecord v = ConstructVLR();
header.AddVLR(v);
setup(header_12_padded, header);
}
{
liblas::Header header = FetchHeader(header_12_padded);
ensure_equals("1.2 header_12_padded iscompressed?", header.Compressed(), true);
// compression is going to add the LASzip VLR
ensure_equals("1.2 header_12_padded data offset", header.GetDataOffset(), (boost::uint32_t)1024);
ensure_equals("1.2 header_12_padded header padding", header.GetHeaderPadding(), (boost::uint32_t)381);
}
{
liblas::Header header;
header.SetVersionMinor(2);
header.SetHeaderPadding(0);
header.SetCompressed(true);
header.SetDataOffset(440);
liblas::VariableRecord v = ConstructVLR();
header.AddVLR(v);
setup(header_12_too_small_pad, header);
}
{
liblas::Header header = FetchHeader(header_12_too_small_pad);
ensure_equals("1.2 header_12_too_small_pad iscompressed?", header.Compressed(), true);
// compression is going to add the LASzip VLR
ensure_equals("1.2 header_12_too_small_pad data offset", header.GetDataOffset(), (boost::uint32_t)643);
ensure_equals("1.2 header_12_too_small_pad header padding", header.GetHeaderPadding(), (boost::uint32_t)0);
}
}
}
#endif // HAVE_LASZIP