geotag.cpp

Reads GPX data and updates images with GPS Tags

// ***************************************************************** -*- C++ -*-
// geotag.cpp
// Sample program to read gpx files and update images with GPS tags
// g++ geotag.cpp -o geotag -lexiv2 -lexpat
#include <exiv2/exiv2.hpp>
#include "unused.h"
#include <iostream>
#include <iomanip>
#include <cassert>
#include <algorithm>
#include <stdio.h>
#include <cstdlib>
#include <time.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <expat.h>
#include <vector>
#include <string>
#if defined(__MINGW32__) || defined(__MINGW64__)
# ifndef __MINGW__
# define __MINGW__
# endif
#endif
using namespace std;
#ifndef lengthof
#define lengthof(x) (sizeof(*x)/sizeof(x))
#endif
#if defined(_MSC_VER) || defined(__MINGW__)
#include <windows.h>
char* realpath(const char* file,char* path);
#define lstat _stat
#define stat _stat
#if _MSC_VER < 1400
#define strcpy_s(d,l,s) strcpy(d,s)
#define strcat_s(d,l,s) strcat(d,s)
#endif
#endif
#if ! defined(_MSC_VER)
#include <dirent.h>
#include <unistd.h>
#include <sys/param.h>
#define stricmp strcasecmp
#endif
#ifndef _MAX_PATH
#define _MAX_PATH 1024
#endif
// prototypes
class Options;
int getFileType(const char* path ,Options& options);
int getFileType(std::string& path,Options& options);
string getExifTime(const time_t t);
time_t parseTime(const char* ,bool bAdjust=false);
int timeZoneAdjust();
// platform specific code
#if defined(_MSC_VER) || defined(__MINGW__)
char* realpath(const char* file,char* path)
{
char* result = (char*) malloc(_MAX_PATH);
if (result) GetFullPathName(file,_MAX_PATH,result,NULL);
return result ;
UNUSED(path);
}
#endif
// Command-line parser
class Options {
public:
bool verbose;
bool help;
bool version;
bool dst;
bool dryrun;
bool ascii;
Options()
{
verbose = false;
help = false;
version = false;
dst = false;
dryrun = false;
ascii = false;
}
virtual ~Options() {} ;
} ;
enum
{ resultOK=0
, resultSyntaxError
, resultSelectFailed
};
enum // keyword indices
{ kwHELP = 0
, kwVERSION
, kwDST
, kwDRYRUN
, kwASCII
, kwVERBOSE
, kwADJUST
, kwTZ
, kwDELTA
, kwMAX // manages keyword array
, kwNEEDVALUE // bogus keywords for error reporting
, kwSYNTAX // -- ditto --
, kwNOVALUE = -kwVERBOSE // keywords <= kwNOVALUE are flags (no value needed)
};
// file types supported
enum
{ typeUnknown = 0
, typeDirectory = 1
, typeImage = 2
, typeXML = 3
, typeFile = 4
, typeDoc = 5
, typeCode = 6
, typeMax = 7
};
// forward declaration
class Position;
// globals
typedef std::map<time_t,Position> TimeDict_t;
typedef std::map<time_t,Position>::iterator TimeDict_i;
typedef std::vector<std::string> strings_t;
const char* gDeg = NULL ; // string "°" or "deg"
TimeDict_t gTimeDict ;
strings_t gFiles;
// Position (from gpx file)
class Position
{
public:
Position(time_t time, double lat, double lon, double ele) :
time_(time)
, lon_(lon)
, lat_(lat)
, ele_(ele)
, delta_(0)
{}
Position():
time_(0)
, lon_(0.0)
, lat_(0.0)
, ele_(0.0)
, delta_(0)
{ }
virtual ~Position() {}
// copy constructor
Position(const Position& o) :
time_(o.time_)
, lon_(o.lon_)
, lat_(o.lat_)
, ele_(o.ele_)
, delta_(o.delta_)
{}
// instance methods
bool good() { return time_ || lon_ || lat_ || ele_ ; }
std::string getTimeString() { if ( times_.empty() ) times_ = getExifTime(time_) ; return times_; }
time_t getTime() { return time_ ; }
// getters/setters
double lat() {return lat_ ;}
double lon() {return lon_ ;}
double ele() {return ele_ ;}
int delta() {return delta_ ;}
void delta(int delta) {delta_=delta ;}
// data
private:
time_t time_;
double lon_ ;
double lat_ ;
double ele_ ;
std::string times_;
int delta_;
// public static data
public:
static int adjust_ ;
static int tz_ ;
static int dst_ ;
static time_t deltaMax_;
// public static member functions
public:
static int Adjust() {return Position::adjust_ + Position::tz_ + Position::dst_ ;}
static int tz() {return tz_ ;}
static int dst() {return dst_ ;}
static int adjust() {return adjust_;}
static std::string toExifString(double d,bool bRational,bool bLat);
static std::string toExifString(double d);
static std::string toExifTimeStamp(std::string& t);
};
std::string Position::toExifTimeStamp(std::string& t)
{
char result[200];
const char* arg = t.c_str();
int HH = 0 ;
int mm = 0 ;
int SS = 0 ;
if ( strstr(arg,":") || strstr(arg,"-") ) {
int YY,MM,DD ;
char a,b,c,d,e ;
sscanf(arg,"%d%c%d%c%d%c%d%c%d%c%d",&YY,&a,&MM,&b,&DD,&c,&HH,&d,&mm,&e,&SS);
}
sprintf(result,"%d/1 %d/1 %d/1",HH,mm,SS);
return std::string(result);
}
std::string Position::toExifString(double d)
{
char result[200];
d *= 100;
sprintf(result,"%d/100",abs((int)d));
return std::string(result);
}
std::string Position::toExifString(double d,bool bRational,bool bLat)
{
const char* NS = d>=0.0?"N":"S";
const char* EW = d>=0.0?"E":"W";
const char* NSEW = bLat ? NS: EW;
if ( d < 0 ) d = -d;
int deg = (int) d;
d -= deg;
d *= 60;
int min = (int) d ;
d -= min;
d *= 60;
int sec = (int)d;
char result[200];
if ( bRational )
sprintf(result,"%d/1 %d/1 %d/1" ,deg,min,sec);
else
sprintf(result,"%03d%s%02d'%02d\"%s" ,deg,gDeg,min,sec,NSEW);
return std::string(result);
}
{
char result[200];
std::string sLat = Position::toExifString(lat_,false,true );
std::string sLon = Position::toExifString(lon_,false,false);
sprintf(result,"%s %s %-8.3f",sLon.c_str(),sLat.c_str(),ele_);
return std::string(result);
}
// defaults
int Position::adjust_ = 0;
int Position::tz_ = timeZoneAdjust();
int Position::dst_ = 0;
time_t Position::deltaMax_ = 60 ;
// UserData - used by XML Parser
class UserData
{
public:
explicit UserData(Options& options):
indent(0)
, count(0)
, nTrkpt(0)
, bTime(false)
, bEle(false)
, ele(0.0)
, lat(0.0)
, lon(0.0)
, options_(options)
{}
virtual ~UserData() {}
// public data members
int indent;
size_t count ;
Position now ;
Position prev;
int nTrkpt;
bool bTime ;
bool bEle ;
double ele;
double lat;
double lon;
std::string exift;
time_t time;
Options& options_;
// static public data memembers
};
// XML Parser Callbacks
static void startElement(void* userData, const char* name, const char** atts )
{
UserData* me = (UserData*) userData;
//for ( int i = 0 ; i < me->indent ; i++ ) printf(" ");
//printf("begin %s\n",name);
me->bTime = strcmp(name,"time")==0;
me->bEle = strcmp(name,"ele")==0;
if ( strcmp(name,"trkpt")==0 ) {
me->nTrkpt++;
while ( *atts ) {
const char* a=atts[0];
const char* v=atts[1];
if ( !strcmp(a,"lat") ) me->lat = atof(v);
if ( !strcmp(a,"lon") ) me->lon = atof(v);
atts += 2 ;
}
}
me->count++ ;
me->indent++ ;
}
static void endElement(void* userData, const char* name)
{
UserData* me = (UserData*) userData;
me->indent-- ;
if ( strcmp(name,"trkpt")==0 ) {
me->nTrkpt--;
me->now = Position(me->time,me->lat,me->lon,me->ele) ;
if ( !me->prev.good() && me->options_.verbose ) {
printf("trkseg %s begin ",me->now.getTimeString().c_str());
}
// remember our location and put it in gTimeDict
gTimeDict[me->time] = me->now ;
me->prev = me->now ;
}
if ( strcmp(name,"trkseg")==0 && me->options_.verbose ) {
printf("%s end\n",me->now.getTimeString().c_str());
}
}
void charHandler(void* userData,const char* s,int len)
{
UserData* me = (UserData*) userData;
if ( me->nTrkpt == 1 ) {
char buffer[100];
int l_max = 98 ; // lengthof(buffer) -2 ;
if ( me->bTime && len > 5 ) {
if ( len < l_max ) {
memcpy(buffer,s,len);
buffer[len]=0;
char* b = buffer ;
while ( *b == ' ' && b < buffer+len ) b++ ;
me->xmlt = b ;
me->time = parseTime(me->xmlt.c_str());
me->exift = getExifTime(me->time);
}
me->bTime=false;
}
if ( me->bEle && len > 2 ) {
if ( len < l_max ) {
memcpy(buffer,s,len);
buffer[len]=0;
char* b = buffer ;
while ( *b == ' ' && b < buffer+len ) b++ ;
me->ele = atof(b);
}
me->bEle=false;
}
}
}
// Time Functions
time_t parseTime(const char* arg,bool bAdjust)
{
time_t result = 0 ;
try {
//559 rmills@rmills-imac:~/bin $ exiv2 -pa ~/R.jpg | grep -i date
//Exif.Image.DateTime Ascii 20 2009:08:03 08:58:57
//Exif.Photo.DateTimeOriginal Ascii 20 2009:08:03 08:58:57
//Exif.Photo.DateTimeDigitized Ascii 20 2009:08:03 08:58:57
//Exif.GPSInfo.GPSDateStamp Ascii 21 2009-08-03T15:58:57Z
// <time>2012-07-14T17:33:16Z</time>
if ( strstr(arg,":") || strstr(arg,"-") ) {
int YY,MM,DD,HH,mm,SS ;
char a,b,c,d,e ;
sscanf(arg,"%d%c%d%c%d%c%d%c%d%c%d",&YY,&a,&MM,&b,&DD,&c,&HH,&d,&mm,&e,&SS);
struct tm T;
memset(&T,0,sizeof(T));
T.tm_min = mm ;
T.tm_hour = HH ;
T.tm_sec = SS ;
if ( bAdjust ) T.tm_sec -= Position::Adjust();
T.tm_year = YY -1900 ;
T.tm_mon = MM -1 ;
T.tm_mday = DD ;
T.tm_isdst = -1 ; // determine value automatically (otherwise hour may shift)
result = mktime(&T);
}
} catch ( ... ) {};
return result ;
}
// West of GMT is negative (PDT = Pacific Daylight = -07:00 == -25200 seconds
int timeZoneAdjust()
{
time_t now = time(NULL);
int offset;
#if defined(_MSC_VER) || defined(__MINGW__)
TIME_ZONE_INFORMATION TimeZoneInfo;
GetTimeZoneInformation( &TimeZoneInfo );
offset = - (((int)TimeZoneInfo.Bias + (int)TimeZoneInfo.DaylightBias) * 60);
UNUSED(now);
#elif defined(__CYGWIN__)
struct tm lcopy = *localtime(&now);
time_t gmt = timegm(&lcopy) ; // timegm modifies lcopy
offset = (int) ( ((long signed int) gmt) - ((long signed int) now) ) ;
#elif defined(OS_SOLARIS)
struct tm local = *localtime(&now) ;
time_t local_tt = (int) mktime(&local);
time_t time_gmt = (int) mktime(gmtime(&now));
offset = time_gmt - local_tt;
#else
struct tm local = *localtime(&now) ;
offset = local.tm_gmtoff ;
#if EXIV2_DEBUG_MESSAGES
struct tm utc = *gmtime(&now);
printf("utc : offset = %6d dst = %d time = %s", 0 ,utc .tm_isdst, asctime(&utc ));
printf("local: offset = %6d dst = %d time = %s", offset,local.tm_isdst, asctime(&local));
printf("timeZoneAdjust = %6d\n",offset);
#endif
#endif
return offset ;
}
string getExifTime(const time_t t)
{
static char result[100];
strftime(result,sizeof(result),"%Y-%m-%d %H:%M:%S",localtime(&t));
return result ;
}
std::string makePath(const std::string& dir, const std::string& file)
{
return dir + std::string(EXV_SEPARATOR_STR) + file ;
}
const char* makePath(const char* dir,const char* file)
{
static char result[_MAX_PATH] ;
std::string r = makePath(std::string(dir),std::string(file));
strcpy(result,r.c_str());
return result;
}
// file utilities
bool readDir(const char* path,Options& options)
{
bool bResult = false;
#ifdef _MSC_VER
DWORD attrs = GetFileAttributes(path);
bool bOKAttrs = attrs != INVALID_FILE_ATTRIBUTES;
bool bIsDir = (attrs & FILE_ATTRIBUTE_DIRECTORY) ? true : false ;
if( bOKAttrs && bIsDir ) {
bResult = true ;
char search[_MAX_PATH+10];
strcpy_s(search,_MAX_PATH,path);
strcat_s(search,_MAX_PATH,"\\*");
WIN32_FIND_DATA ffd;
HANDLE hFind = FindFirstFile(search, &ffd);
BOOL bGo = hFind != INVALID_HANDLE_VALUE;
if ( bGo ) {
while ( bGo ) {
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
// _tprintf(TEXT(" %s <DIR>\n"), ffd.cFileName);
}
else
{
std::string pathName = makePath(path,std::string(ffd.cFileName));
if ( getFileType(pathName,options) == typeImage ) {
gFiles.push_back( pathName );
}
}
bGo = FindNextFile(hFind, &ffd) != 0;
}
// CloseHandle(hFind);
}
}
#else
DIR* dir = opendir (path);
if (dir != NULL)
{
bResult = true;
struct dirent* ent;
// print all the files and directories within directory
while ((ent = readdir (dir)) != NULL)
{
std::string pathName = makePath(path,ent->d_name);
struct stat buf ;
lstat(path, &buf );
if ( ent->d_name[0] != '.' ) {
// printf("reading %s => %s\n",ent->d_name,pathName.c_str());
if ( getFileType(pathName,options) == typeImage ) {
gFiles.push_back( pathName );
}
}
}
closedir (dir);
}
#endif
return bResult ;
}
inline size_t sip(FILE* f,char* buffer,size_t max_len,size_t len)
{
while ( !feof(f) && len < max_len && buffer[len-1] != '>')
buffer[len++] = fgetc(f);
return len;
}
bool readXML(const char* path,Options& options)
{
FILE* f = fopen(path,"r");
XML_Parser parser = XML_ParserCreate(NULL);
bool bResult = f && parser ;
if ( bResult ) {
char buffer[8*1024];
UserData me(options) ;
XML_SetUserData (parser, &me);
XML_SetElementHandler (parser, startElement, endElement);
XML_SetCharacterDataHandler(parser,charHandler);
// a little sip at the data
size_t len = fread(buffer,1,sizeof(buffer)-100,f);
const char* lead = "<?xml" ;
bResult = strncmp(lead,buffer,strlen(lead))==0;
// swallow it
if ( bResult ) {
len = sip(f,buffer,sizeof buffer,len);
bResult = XML_Parse(parser, buffer,(int)len, len == 0 ) == XML_STATUS_OK;
}
// drink the rest of the file
while ( bResult && len != 0 ) {
len = fread(buffer,1,sizeof(buffer)-100,f);
len = sip(f,buffer,sizeof buffer,len);
bResult = XML_Parse(parser, buffer,(int)len, len == 0 ) == XML_STATUS_OK;
};
}
if ( f ) fclose(f);
if ( parser ) XML_ParserFree(parser);
return bResult ;
}
bool readImage(const char* path,Options& /* options */)
{
using namespace Exiv2;
bool bResult = false ;
try {
Image::AutoPtr image = ImageFactory::open(path);
if ( image.get() ) {
image->readMetadata();
ExifData &exifData = image->exifData();
bResult = !exifData.empty();
}
} catch ( ... ) {};
return bResult ;
}
time_t readImageTime(const std::string& path,std::string* pS=NULL)
{
using namespace Exiv2;
time_t result = 0 ;
const char* dateStrings[] =
{ "Exif.Photo.DateTimeOriginal"
, "Exif.Photo.DateTimeDigitized"
, "Exif.Image.DateTime"
, NULL
};
const char* dateString = dateStrings[0] ;
do {
try {
Image::AutoPtr image = ImageFactory::open(path);
if ( image.get() ) {
image->readMetadata();
ExifData &exifData = image->exifData();
// printf("%s => %s\n",dateString, exifData[dateString].toString().c_str());
result = parseTime(exifData[dateString].toString().c_str(),true);
if ( result && pS ) *pS = exifData[dateString].toString();
}
} catch ( ... ) {};
} while ( !result && ++dateString );
return result ;
}
bool sina(const char* s,const char** a)
{
bool bResult = false ;
int i = 0 ;
while ( *s == '-' ) s++;
while ( !bResult && a[i]) {
const char* A = a[i] ;
while ( *A == '-' ) A++ ;
bResult = stricmp(s,A)==0;
i++;
}
return bResult;
}
int readFile(const char* path,Options /* options */)
{
FILE* f = fopen(path,"r");
int nResult = f ? typeFile : typeUnknown;
if ( f ) {
const char* ext = strstr(path,".");
if ( ext ) {
const char* docs[] = { ".doc",".txt", NULL };
const char* code[] = { ".cpp",".h" ,".pl" ,".py" ,".pyc", NULL };
if ( sina(ext,docs) )
nResult = typeDoc;
if ( sina(ext,code) )
nResult = typeCode;
}
}
if ( f ) fclose(f) ;
return nResult ;
}
Position* searchTimeDict(TimeDict_t& td, const time_t& time,long long delta)
{
Position* result = NULL;
for ( int t = 0 ; !result && t < delta ; t++ ) {
for ( int x = 0 ; !result && x < 2 ; x++ ) {
int T = t * ((x==0)?-1:1);
if ( td.count(time+T) ) {
result = &td[time+T];
result->delta(T);
}
}
}
return result;
}
int getFileType(std::string& path,Options& options) { return getFileType(path.c_str(),options); }
int getFileType(const char* path,Options& options)
{
return readXML (path,options) ? typeXML
: readDir (path,options) ? typeDirectory
: readImage(path,options) ? typeImage
: readFile (path,options)
;
}
int version(const char* program)
{
printf("%s: %s %s\n",program,__DATE__,__TIME__);
return 0;
}
int help(const char* program,char const* words[],int nWords,bool /*bVerbose*/)
{
printf("usage: %s ",program);
for ( int i = 0 ; i < nWords ; i++ ) {
if ( words[i] )
printf("%c-%s%s",i?'|':'{',words[i],i>(-kwNOVALUE)?" value":"");
}
printf("}+ path+\n");
return 0;
}
int compare(const char* a,const char* b)
{
int result=*a && *b;
while ( result && *a && *b) {
char A=*a++;
char B=*b++;
result=tolower(A)==tolower(B);
}
return result;
}
int find(const char* arg,char const* words[],int nWords)
{
if ( arg[0] != '-' ) return kwSYNTAX;
int result=0;
int count =0;
for ( int i = 0 ; i < nWords ; i++) {
int j = 0 ;
while ( arg[j] == '-' ) j++;
if ( ::compare(arg+j,words[i]) ) {
result = i ;
count++;
}
}
return count==1?result:kwSYNTAX;
}
int parseTZ(const char* adjust)
{
int h=0;
int m=0;
char c ;
try {
sscanf(adjust,"%d%c%d",&h,&c,&m);
} catch ( ... ) {} ;
return (3600*h)+(60*m);
}
bool mySort(const std::string& a, const std::string& b)
{
time_t A = readImageTime(a);
time_t B = readImageTime(b);
return (A<B);
}
int main(int argc,const char* argv[])
{
int result=0;
const char* program = argv[0];
const char* types[typeMax];
types[typeUnknown ] = "unknown";
types[typeDirectory] = "directory";
types[typeImage ] = "image";
types[typeXML ] = "xml";
types[typeDoc ] = "doc";
types[typeCode ] = "code";
types[typeFile ] = "file";
char const* keywords[kwMAX];
memset(keywords,0,sizeof(keywords));
keywords[kwHELP ] = "help";
keywords[kwVERSION ] = "version";
keywords[kwVERBOSE ] = "verbose";
keywords[kwDRYRUN ] = "dryrun";
keywords[kwASCII ] = "ascii";
keywords[kwDST ] = "dst";
keywords[kwADJUST ] = "adjust";
keywords[kwTZ ] = "tz";
keywords[kwDELTA ] = "delta";
map<std::string,string> shorts;
shorts["-?"] = "-help";
shorts["-h"] = "-help";
shorts["-v"] = "-verbose";
shorts["-V"] = "-version";
shorts["-d"] = "-dst";
shorts["-a"] = "-adjust";
shorts["-t"] = "-tz";
shorts["-D"] = "-delta";
shorts["-s"] = "-delta";
shorts["-X"] = "-dryrun";
shorts["-a"] = "-ascii";
Options options ;
options.help = sina(keywords[kwHELP ],argv) || argc < 2;
options.verbose = sina(keywords[kwVERBOSE],argv);
options.dryrun = sina(keywords[kwDRYRUN ],argv);
options.version = sina(keywords[kwVERSION],argv);
options.dst = sina(keywords[kwDST ],argv);
options.ascii = sina(keywords[kwASCII ],argv);
for ( int i = 1 ; !result && i < argc ; i++ ) {
const char* arg = argv[i++];
if ( shorts.count(arg) ) arg = shorts[arg].c_str();
const char* value = argv[i ];
int ivalue = ::atoi(value?value:"0");
int key = ::find(arg,keywords,kwMAX);
int needv = key < kwMAX && key > (-kwNOVALUE);
if (!needv ) i--;
if ( needv && !value) key = kwNEEDVALUE;
switch ( key ) {
case kwDST : options.dst = true ; break;
case kwHELP : options.help = true ; break;
case kwVERSION : options.version = true ; break;
case kwDRYRUN : options.dryrun = true ; break;
case kwVERBOSE : options.verbose = true ; break;
case kwASCII : options.ascii = true ; break;
case kwTZ : Position::tz_ = parseTZ(value);break;
case kwADJUST : Position::adjust_ = ivalue;break;
case kwDELTA : Position::deltaMax_ = ivalue;break;
case kwNEEDVALUE: fprintf(stderr,"error: %s requires a value\n",arg); result = resultSyntaxError ; break ;
case kwSYNTAX : default:
{
int type = getFileType(arg,options) ;
if ( options.verbose ) printf("%s %s ",arg,types[type]) ;
if ( type == typeImage ) {
time_t t = readImageTime(std::string(arg)) ;
#ifdef __APPLE__
char buffer[1024];
#else
char* buffer = NULL;
#endif
char* path = realpath(arg,buffer);
if ( t && path ) {
if ( options.verbose) printf("%s %ld %s",path,(long int)t,asctime(localtime(&t)));
gFiles.push_back(path);
}
if ( path && path != buffer ) ::free((void*) path);
}
if ( type == typeUnknown ) {
fprintf(stderr,"error: illegal syntax %s\n",arg);
result = resultSyntaxError ;
}
} break;
}
}
if ( options.help ) ::help(program,keywords,kwMAX,options.verbose);
if ( options.version ) ::version(program);
gDeg = options.ascii ? "deg" : "°";
if ( !result ) {
sort(gFiles.begin(),gFiles.end(),mySort);
if ( options.dst ) Position::dst_ = 3600;
if ( options.verbose ) {
int t = Position::tz();
int d = Position::dst();
int a = Position::adjust();
int A = Position::Adjust();
int s = A ;
int h = s/3600;
s-= h*3600;
s = abs(s);
int m = s/60 ;
s-= m*60 ;
printf("tz,dst,adjust = %d,%d,%d total = %dsecs (= %d:%d:%d)\n",t,d,a,A,h,m,s);
}
/*
if ( options.verbose ) {
printf("Time Dictionary\n");
for ( TimeDict_i it = gTimeDict.begin() ; it != gTimeDict.end() ; it++ ) {
std::string sTime = getExifTime(it->first);
Position* pPos = &it->second;
std::string sPos = Position::toExifString(pPos->lat(),false,true)
+ " "
+ Position::toExifString(pPos->lon(),false,true)
;
printf("%s %s\n",sTime.c_str(), sPos.c_str());
}
}
*/
for ( size_t p = 0 ; p < gFiles.size() ; p++ ) {
std::string path = gFiles[p] ;
std::string stamp ;
try {
time_t t = readImageTime(path,&stamp) ;
Position* pPos = searchTimeDict(gTimeDict,t,Position::deltaMax_);
if ( image.get() ) {
image->readMetadata();
Exiv2::ExifData& exifData = image->exifData();
if ( pPos ) {
exifData["Exif.GPSInfo.GPSProcessingMethod" ] = "65 83 67 73 73 0 0 0 72 89 66 82 73 68 45 70 73 88"; // ASCII HYBRID-FIX
exifData["Exif.GPSInfo.GPSVersionID" ] = "2 2 0 0";
exifData["Exif.GPSInfo.GPSMapDatum" ] = "WGS-84";
exifData["Exif.GPSInfo.GPSLatitude" ] = Position::toExifString(pPos->lat(),true,true);
exifData["Exif.GPSInfo.GPSLongitude" ] = Position::toExifString(pPos->lon(),true,false);
exifData["Exif.GPSInfo.GPSAltitude" ] = Position::toExifString(pPos->ele());
exifData["Exif.GPSInfo.GPSAltitudeRef" ] = pPos->ele()<0.0?"1":"0";
exifData["Exif.GPSInfo.GPSLatitudeRef" ] = pPos->lat()>0?"N":"S";
exifData["Exif.GPSInfo.GPSLongitudeRef" ] = pPos->lon()>0?"E":"W";
exifData["Exif.GPSInfo.GPSDateStamp" ] = stamp;
exifData["Exif.GPSInfo.GPSTimeStamp" ] = Position::toExifTimeStamp(stamp);
exifData["Exif.Image.GPSTag" ] = 4908;
printf("%s %s % 2d\n",path.c_str(),pPos->toString().c_str(),pPos->delta());
} else {
printf("%s *** not in time dict ***\n",path.c_str());
}
if ( !options.dryrun ) image->writeMetadata();
}
} catch ( ... ) {};
}
}
return result ;
}
// That's all Folks!