1 files changed, 59 insertions, 0 deletions
diff --git a/app/photos/readexif.py b/app/photos/readexif.py
new file mode 100644
index 0000000..0b3f7f7
--- /dev/null
+++ b/app/photos/readexif.py
@@ -0,0 +1,59 @@
+import time
+from fractions import Fraction
+
+from django.contrib.gis.geos import Point
+
+import exiftool
+
+from locations.models import Location
+
+
+def readexif(image):
+    """
+    takes an image and fills in all the exif data tracked in the image model
+
+    """
+    with exiftool.ExifTool() as et:
+        meta = et.get_metadata(image.image.path)
+    et.terminate()
+    image.exif_raw = meta
+    try:
+        image.title = meta["EXIF:ImageDescription"]
+    except:
+        try: 
+            image.title = meta["XMP:Title"]
+        except:
+            pass
+    try:
+        image.caption = meta["EXIF:UserComment"]
+    except:
+        pass
+    try:
+        image.exif_lens = meta["MakerNotes:LensType"]
+    except:
+        try:
+            image.exif_lens = meta["XMP:Lens"]
+        except:
+            pass
+    try:
+        image.point = Point(meta["XMP:GPSLongitude"], meta["XMP:GPSLatitude"], srid=4326)
+        try:
+            image.location = Location.objects.filter(geometry__contains=image.point).get()
+        except Location.DoesNotExist:
+            pass
+    except KeyError:
+        pass
+    try:
+        image.exif_aperture = meta["EXIF:FNumber"]
+    except:
+        pass
+    image.exif_make = meta["EXIF:Make"]
+    image.exif_model = meta["EXIF:Model"]
+    image.exif_exposure = str(Fraction(float(meta["EXIF:ExposureTime"])).limit_denominator())
+    image.exif_iso = meta["EXIF:ISO"]
+    image.exif_focal_length = meta["EXIF:FocalLength"]
+    fmt_date = time.strptime(meta["EXIF:DateTimeOriginal"], "%Y:%m:%d %H:%M:%S")
+    image.exif_date = time.strftime("%Y-%m-%d %H:%M:%S", fmt_date)
+    image.height = meta["File:ImageHeight"]
+    image.width = meta["File:ImageWidth"]
+    return image