D16617: fix extraction of GPS altitude for exif data

[Stefan Brüns]

bruns requested changes to this revision.
bruns added inline comments.
This revision now requires changes to proceed.

INLINE COMMENTS

> exiv2extractor.cpp:285
> +    if (it != data.end()) {
> +        alt = it->value().toFloat();
> +        it = data.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitudeRef"));

According to:
https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/GPS.html
and
http://www.cipa.jp/std/documents/e/DC-008-Translation-2016-E.pdf

the absolute altitude value is a rational, like deg/min/sec.

REPOSITORY
  R286 KFileMetaData

REVISION DETAIL
  https://phabricator.kde.org/D16617

To: astippich, #frameworks, bruns
Cc: kde-frameworks-devel, #baloo, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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