/usr/include/pdal/io/LasReader.hpp

/******************************************************************************
* Copyright (c) 2011, Michael P. Gerlek (mpg@flaxen.com)
*
* All rights reserved.
*
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* modification, are permitted provided that the following
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*
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*       notice, this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright
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*       the documentation and/or other materials provided
*       with the distribution.
*     * Neither the name of Hobu, Inc. or Flaxen Geo Consulting 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
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#pragma once

#include <pdal/pdal_export.hpp>
#include <pdal/plugin.hpp>
#include <pdal/Compression.hpp>
#include <pdal/PDALUtils.hpp>
#include <pdal/Reader.hpp>
#ifdef PDAL_HAVE_LASZIP
#include <laszip/laszip_api.h>
#else
using laszip_POINTER = void *;
using laszip_point_struct = void *;
struct laszip_point;
#endif

#include "LasError.hpp"
#include "LasHeader.hpp"
#include "LasUtils.hpp"

extern "C" int32_t LasReader_ExitFunc();
extern "C" PF_ExitFunc LasReader_InitPlugin();

namespace pdal
{

class NitfReader;
class LasHeader;
class LeExtractor;
class PointDimensions;

class PDAL_DLL LasReader : public pdal::Reader
{
protected:
    class LasStreamIf
    {
    protected:
        LasStreamIf()
        {}

    public:
        LasStreamIf(const std::string& filename)
            { m_istream = Utils::openFile(filename); }

        ~LasStreamIf()
        {
            if (m_istream)
                Utils::closeFile(m_istream);
        }

        std::istream *m_istream;
    };

    friend class NitfReader;
public:
    LasReader() : pdal::Reader(), m_index(0)
        {}

    static void * create();
    static int32_t destroy(void *);
    std::string getName() const;

    const LasHeader& header() const
        { return m_header; }
    point_count_t getNumPoints() const
        { return m_header.pointCount(); }

protected:
    virtual void createStream()
    {
        if (m_streamIf)
            std::cerr << "Attempt to create stream twice!\n";
        m_streamIf.reset(new LasStreamIf(m_filename));
        if (!m_streamIf->m_istream)
        {
            std::ostringstream oss;
            oss << "Unable to open stream for '"
                << m_filename <<"' with error '" << strerror(errno) <<"'";
            throw pdal_error(oss.str());
        }
    }

    std::unique_ptr<LasStreamIf> m_streamIf;

private:
    typedef std::vector<LasUtils::IgnoreVLR> IgnoreVLRList;

    LasHeader m_header;
    laszip_POINTER m_laszip;
    laszip_point_struct *m_laszipPoint;
    std::unique_ptr<LazPerfVlrDecompressor> m_decompressor;
    std::vector<char> m_decompressorBuf;
    point_count_t m_index;
    StringList m_extraDimSpec;
    std::vector<ExtraDim> m_extraDims;
    IgnoreVLRList m_ignoreVLRs;
    std::string m_compression;
    StringList m_ignoreVLROption;

    virtual void addArgs(ProgramArgs& args);
    virtual void initialize(PointTableRef table)
        { initializeLocal(table, m_metadata); }
    virtual void initializeLocal(PointTableRef table, MetadataNode& m);
    virtual void addDimensions(PointLayoutPtr layout);
    virtual QuickInfo inspect();
    virtual void ready(PointTableRef table);
    virtual point_count_t read(PointViewPtr view, point_count_t count);
    virtual bool processOne(PointRef& point);
    virtual void done(PointTableRef table);
    virtual bool eof()
        { return m_index >= getNumPoints(); }

    void handleCompressionOption();
    void setSrs(MetadataNode& m);
    void readExtraBytesVlr();
    void extractHeaderMetadata(MetadataNode& forward, MetadataNode& m);
    void extractVlrMetadata(MetadataNode& forward, MetadataNode& m);
    void loadPoint(PointRef& point, laszip_point& p);
    void loadPointV10(PointRef& point, laszip_point& p);
    void loadPointV14(PointRef& point, laszip_point& p);
    void loadPoint(PointRef& point, char *buf, size_t bufsize);
    void loadPointV10(PointRef& point, char *buf, size_t bufsize);
    void loadPointV14(PointRef& point, char *buf, size_t bufsize);
    void loadExtraDims(LeExtractor& istream, PointRef& data);
    point_count_t readFileBlock(std::vector<char>& buf,
        point_count_t maxPoints);
    void handleLaszip(int result);

    LasReader& operator=(const LasReader&); // not implemented
    LasReader(const LasReader&); // not implemented
};

} // namespace pdal
libpdal-dev 1.6.0-1build2 / usr / include / pdal / io / LasReader.hpp
