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[exif] negative lat/lon/alt

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This commit is contained in:
Christophe De Wagter
2015-11-02 18:01:33 +01:00
parent 0ab60b5cd3
commit 5e513e71cc
1 changed files with 14 additions and 9 deletions
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sw/airborne/modules/computer_vision/lib/exif/exif_module.c
+14 -9
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@@ -27,9 +27,9 @@
//////////////////////////////////////////////////////////////
// Multithreaded part
volatile uint32_t lat_em7deg = 0;
volatile uint32_t lon_em7deg = 0;
volatile uint32_t alt_mm = 0;
volatile int32_t lat_em7deg = 0;
volatile int32_t lon_em7deg = 0;
volatile int32_t alt_mm = 0;
//////////////////////////////////////////////////////////////
// Paparazzi part
@@ -203,8 +203,8 @@ int write_exif_jpeg(char *filename, const unsigned char *image_jpg, const unsign
entry->format = EXIF_FORMAT_RATIONAL;
entry->components = 3;
// Degrees
uint32_t lat = lat_em7deg;
uint32_t lati = lat / 1e7;
int32_t lat = lat_em7deg;
int32_t lati = lat / 1e7;
ExifRational loc;
loc.numerator = lati;
loc.denominator = 1;
@@ -227,8 +227,8 @@ int write_exif_jpeg(char *filename, const unsigned char *image_jpg, const unsign
entry->components = 3;
// Degrees
// Degrees
uint32_t lon = lon_em7deg;
uint32_t loni = lon / 1e7;
int32_t lon = lon_em7deg;
int32_t loni = lon / 1e7;
loc.numerator = loni;
loc.denominator = 1;
exif_set_rational(entry->data, EXIF_BYTE_ORDER_INTEL, loc);
@@ -251,8 +251,13 @@ int write_exif_jpeg(char *filename, const unsigned char *image_jpg, const unsign
entry->components = 1;
// Height
ExifRational alt;
alt.numerator = alt_mm;
alt.denominator = 1000;
if (alt_mm > 0) {
alt.numerator = alt_mm;
alt.denominator = 1000;
} else {
alt.numerator = 0;
alt.denominator = 1000;
}
exif_set_rational(entry->data, EXIF_BYTE_ORDER_INTEL, alt);