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src/extractors/exiv2extractor.cpp
| Show First 20 Lines • Show All 286 Lines • ▼ Show 20 Line(s) | 246 | { | |||
|---|---|---|---|---|---|
| 287 | 287 | | |||
| 288 | return std::numeric_limits<double>::quiet_NaN(); | 288 | return std::numeric_limits<double>::quiet_NaN(); | ||
| 289 | } | 289 | } | ||
| 290 | 290 | | |||
| 291 | double Exiv2Extractor::fetchGpsAltitude(const Exiv2::ExifData& data) | 291 | double Exiv2Extractor::fetchGpsAltitude(const Exiv2::ExifData& data) | ||
| 292 | { | 292 | { | ||
| 293 | double alt = std::numeric_limits<double>::quiet_NaN(); | 293 | double alt = std::numeric_limits<double>::quiet_NaN(); | ||
| 294 | Exiv2::ExifData::const_iterator it = data.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitude")); | 294 | Exiv2::ExifData::const_iterator it = data.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitude")); | ||
| 295 | if (it != data.end()) { | 295 | if (it != data.end() && (it->value().typeId() == Exiv2::unsignedRational || it->value().typeId() == Exiv2::signedRational)) { | ||
| 296 | auto ratio = it->value().toRational(); | 296 | auto ratio = it->value().toRational(); | ||
| 297 | it = data.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitudeRef")); | 297 | it = data.findKey(Exiv2::ExifKey("Exif.GPSInfo.GPSAltitudeRef")); | ||
| 298 | if ((ratio.second != 0) && (it != data.end())) { | 298 | if ((ratio.second != 0) && (it != data.end()) && (it->value().typeId() == Exiv2::unsignedByte || it->value().typeId() == Exiv2::signedByte)) { | ||
| 299 | auto altRef = it->value().toLong(); | 299 | auto altRef = it->value().toLong(); | ||
| 300 | if (altRef) { | 300 | if (altRef) { | ||
| 301 | alt = -1.0 * ratio.first / ratio.second; | 301 | alt = -1.0 * ratio.first / ratio.second; | ||
| 302 | } else { | 302 | } else { | ||
| 303 | alt = 1.0 * ratio.first / ratio.second; | 303 | alt = 1.0 * ratio.first / ratio.second; | ||
| 304 | } | 304 | } | ||
| 305 | } | 305 | } | ||
| 306 | } | 306 | } | ||
| Show All 13 Lines | |||||