380 lines
9.2 KiB
C++
380 lines
9.2 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2019,
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Faculty of Mathematics and Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//[<] [\ensuremath{<}]
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//[>] [\ensuremath{>}]
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\setcounter{tocdepth}{3}
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\tableofcontents
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1 Class representing variable length records.
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*/
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#pragma once
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#include <cstdint>
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#include <cstring>
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#include <vector>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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class vlr{
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public:
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uint16_t reserved;
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char userId[16];
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uint16_t recordId;
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uint64_t recordLength;
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char description[32];
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vlr(){
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reserved = 0;
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std::memset(userId,0,16);
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recordId = 0;
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recordLength = 0;
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memset(description,0,32);
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}
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vlr(const vlr& src) {
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reserved = src.reserved;
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memcpy(userId,src.userId,16);
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recordId = src.recordId;
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recordLength = src.recordLength;
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memcpy(description, src.description,32);
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}
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vlr& operator=(const vlr& src){
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reserved = src.reserved;
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memcpy(userId,src.userId,16);
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recordId = src.recordId;
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recordLength = src.recordLength;
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memcpy(description, src.description,32);
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return *this;
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}
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bool check(const std::string& _userid, uint16_t _recordId) const{
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if(recordId!=_recordId) return false;
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return strcmp(userId, _userid.c_str()) == 0;
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}
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virtual ~vlr(){}
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static vlr* read(std::ifstream& in, bool extended);
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virtual std::ostream& print(std::ostream& out) const{
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out << "userId: " << userId << std::endl;
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out << "recordID: " << recordId << std::endl;
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out << "recordLength: " << recordLength << std::endl;
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out << "description: " << std::string(description,32) << std::endl;
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return out;
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}
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};
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/*
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2 Implementation of known vlrs
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*/
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class LASF_Projection_2111: public vlr{
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// OGC MATH TRANSFORM WKT RECORD
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public:
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static LASF_Projection_2111* create(vlr& s, std::ifstream& in) {
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if(!s.check("LASF_Projection", 2111)) return 0;
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LASF_Projection_2111* res = new LASF_Projection_2111(s);
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if(res->read(in)){
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return res;
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}
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delete res;
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return 0;
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}
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virtual std::ostream& print(std::ostream& out) const{
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vlr::print(out);
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out << "content " << content << std::endl;
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return out;
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}
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const char* getData() const{
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return content.c_str();
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}
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private:
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LASF_Projection_2111(const vlr& s): vlr(s), content(""){}
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bool read(std::ifstream& in) {
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char* c = new char[recordLength];
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in.read(c,recordLength);
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if(in.good()){
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content = c;
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}
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delete[] c;
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// TODO extract projection values from WKT
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return in.good();
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}
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std::string content;
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};
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class LASF_Projection_2112: public vlr{
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// OGC COORDINATE SYSTEM WKT
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public:
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static LASF_Projection_2112* create(vlr& s, std::ifstream& in) {
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if(!s.check("LASF_Projection", 2112)) return 0;
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LASF_Projection_2112* res = new LASF_Projection_2112(s);
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if(res->read(in)){
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return res;
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}
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delete res;
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return 0;
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}
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virtual std::ostream& print(std::ostream& out) const{
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vlr::print(out);
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out << "content " << content << std::endl;
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return out;
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}
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const char* getData() const{
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return content.c_str();
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}
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private:
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LASF_Projection_2112(const vlr& s): vlr(s), content(""){}
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bool read(std::ifstream& in) {
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char* c = new char[recordLength];
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in.read(c,recordLength);
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if(in.good()){
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content = c;
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}
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delete[] c;
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// TODO extract projection values from WKT
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return in.good();
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}
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std::string content;
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};
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class LASF_Projection_34735: public vlr{
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public:
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static LASF_Projection_34735* create(const vlr& s, std::ifstream& in){
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if(!s.check("LASF_Projection",34735)){
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return 0;
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}
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LASF_Projection_34735* res = new LASF_Projection_34735(s);
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if(res->read(in)){
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return res;
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}
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delete res;
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return 0;
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}
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virtual std::ostream& print(std::ostream& out) const{
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vlr::print(out);
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out << "wKeyDirectoryVersion = " << wKeyDirectoryVersion << std::endl;
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out << "wKeyRevision = " << wKeyRevision << std::endl;
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out << "wMinorRevision = " << wMinorRevision << std::endl;
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out << "wNumberOfKeys = " << wNumberOfKeys << std::endl;
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for(size_t i=0;i<pKeys.size();i++){
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out << "pKey["<<i<<"] = ";
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pKeys[i].print(out) << std::endl;
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}
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return out;
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}
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int numOfKeys() const{
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return wNumberOfKeys;
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}
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struct sKeyEntry{
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uint16_t wKeyID;
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uint16_t wTIFFTagLocation;
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uint16_t wCount;
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uint16_t wValue_Offset;
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std::ostream& print(std::ostream& out) const{
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out << "keyID: " << wKeyID
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<< ", tiffLocation : " << wTIFFTagLocation
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<< ", count : " << wCount
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<< ", valueOffset : " << wValue_Offset;
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return out;
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}
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void read(std::ifstream& in, size_t& offset){
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in.read(reinterpret_cast<char*>(&wKeyID),2);
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offset +=2;
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in.read(reinterpret_cast<char*>(&wTIFFTagLocation),2);
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offset +=2;
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in.read(reinterpret_cast<char*>(&wCount),2);
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offset +=2;
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in.read(reinterpret_cast<char*>(&wValue_Offset),2);
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offset +=2;
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}
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};
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sKeyEntry getEntry(int i){
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return pKeys[i];
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}
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private:
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LASF_Projection_34735(const vlr& super):vlr(super){}
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bool read(std::ifstream& in);
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uint16_t wKeyDirectoryVersion;
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uint16_t wKeyRevision;
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uint16_t wMinorRevision;
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uint16_t wNumberOfKeys;
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std::vector<sKeyEntry> pKeys;
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};
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class LASF_Projection_34736: public vlr{
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// GeoDoubleParamsTag Record
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public:
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static LASF_Projection_34736* create(vlr& s, std::ifstream& in) {
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if(!s.check("LASF_Projection", 34736)) return 0;
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LASF_Projection_34736* res = new LASF_Projection_34736(s);
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if(res->read(in)){
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return res;
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}
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delete res;
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return 0;
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}
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virtual std::ostream& print(std::ostream& out) const{
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vlr::print(out);
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for(size_t i=0;i<content.size(); i++){
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out << "content[" << i << "] = " << content[i] << std::endl;
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}
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return out;
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}
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double* getData(){
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char* res = new char[content.size()*8];
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size_t offset = 0;
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for(size_t i=0;i<content.size();i++){
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double v = content[i];
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memcpy(res+offset,reinterpret_cast<char*>(&v),8);
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offset += 8;
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}
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return reinterpret_cast<double*>(res);
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}
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private:
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LASF_Projection_34736(const vlr& s): vlr(s), content(){}
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bool read(std::ifstream& in) {
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content.clear();
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int numvalues = recordLength/8;
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size_t ignore = recordLength % 8;
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double value;
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for(int i=0;i<numvalues;i++){
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in.read(reinterpret_cast<char*>(&value),8);
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content.push_back(value);
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}
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if(ignore>0){
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in.seekg(ignore,std::ios::cur);
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}
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return in.good();
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}
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std::vector<double> content;
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};
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class LASF_Projection_34737: public vlr{
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// GeoAsciiParamsTag Record
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public:
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static LASF_Projection_34737* create(vlr& s, std::ifstream& in) {
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if(!s.check("LASF_Projection", 34737)) return 0;
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LASF_Projection_34737* res = new LASF_Projection_34737(s);
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if(res->read(in)){
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return res;
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}
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delete res;
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return 0;
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}
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~LASF_Projection_34737(){
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if(content){
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delete[] content;
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}
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}
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virtual std::ostream& print(std::ostream& out) const{
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vlr::print(out);
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size_t i=0;
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while(i<recordLength){
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std::stringstream ss;
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if(content[i]==0){
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i++;
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} else {
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ss << content[i];
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i++;
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while(i<recordLength && content[i]!=0){
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ss << content[i];
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i++;
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}
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out << ss.str();
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}
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}
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return out;
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}
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char* getData(){
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char* res = new char[recordLength];
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memcpy(res,content,recordLength);
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return res;
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}
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private:
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LASF_Projection_34737(const vlr& s): vlr(s), content(0){}
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bool read(std::ifstream& in) {
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content = new char[recordLength];
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in.read(content,recordLength);
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return in.good();
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}
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char* content;
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};
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