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/* correlate.h
* Written by Daniel Foote.
* Started Feb 2005.
* This file contains the options structure and prototypes for
* functions in correlate.c.
/* Copyright 2005 Daniel Foote.
* This file is part of gpscorrelate.
* gpscorrelate is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* gpscorrelate is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with gpscorrelate; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/* A structure of options to pass to the correlate function.
* Not really sure if this is needed, but... */
struct CorrelateOptions {
int NoWriteExif;
int NoInterpolate;
int NoChangeMtime;
int TimeZoneHours; /* To add to photos to make them UTC. */
int TimeZoneMins;
int AutoTimeZone;
int FeatherTime;
char* Datum; /* Datum of the data; when writing. */
int DoBetweenTrkSeg; /* Match between track segments. */
int DegMinSecs; /* Write out data as DD MM SS.SS (more accurate than in the past) */
int Result;
int PhotoOffset; /* Offset applied to Photo time. This is ADDED to PHOTO TIME
to make it match GPS time. In seconds.
This is (GPS - Photo) */
struct GPSTrack *Track; /* Pointer to array of tracks to use. The last
track must be entirely zeros. */
/* Return codes in order:
* _OK - all ok. Correlated exactly.
* _INTERPOLATED - all ok, interpolated point.
* _ROUND - point rounded to nearest.
* _NOMATCH - could not find a match - photo timestamp outside GPS data
* (This could be due to timezone of photos not set/set wrong).
* Returns NULL for Point.
* _TOOFAR - point outside "feather" time. Too far from any point.
* Returns NULL for Point.
* _EXIFWRITEFAIL - unable to write EXIF tags.
* _NOEXIFINPUT - The source file contained no EXIF tags, or not the one we wanted. Hmm.
* Returns NULL for Point.
* _GPSDATAEXISTS - There is already GPS data in the photo... you probably don't want
* to fiddle with it.
* Returns NULL for Point.
#define CORR_OK 1
#define CORR_ROUND 3
#define CORR_NOMATCH 4
#define CORR_TOOFAR 5
struct GPSPoint* CorrelatePhoto(const char* Filename,
struct CorrelateOptions* Options);
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