tags 684807 patch
thanks
Dear maintainer,
I have a attached a patch to support altitudes below sea level in exif
tags with gpsbabel.
Kind regards,
Arnold Metselaar
Handle GPS tags indicating photo was taken below sea level
--- a/gpsbabel/exif.c~ 2012-05-16 21:23:12.000000000 +0200
+++ b/gpsbabel/exif.c 2012-08-13 23:18:13.000000000 +0200
@@ -779,10 +779,21 @@ exif_waypt_from_exif_app(exif_app_t* app
}
if (alt != unknown_alt) {
- if (alt_ref != 0) {
+ double sign;
+ switch (alt_ref != 0) {
+ case 0:
+ sign = 1.0;
+ break;
+
+ case 1:
+ sign = -1.0;
+ break;
+
+ default:
warning(MYNAME ": Invalid GPSAltitudeRef (%d)! Using 0 (= Sea level).\n", alt_ref);
+ sign = 1.0;
}
- wpt->altitude = alt;
+ wpt->altitude = sign * alt;
#ifdef EXIF_DBG
printf(MYNAME "-GPSAltitude = %12.7f m\n", wpt->altitude);
#endif
