Fix rotated images

api/trotamundos.py

@@ -93,13 +93,37 @@ def read_trips():
         return {}
 
 
+def reorient_image(im):
+    try:
+        image_exif = im._getexif()
+        image_orientation = image_exif[274]
+        if image_orientation in (2,'2'):
+            return im.transpose(Image.FLIP_LEFT_RIGHT)
+        elif image_orientation in (3,'3'):
+            return im.transpose(Image.ROTATE_180)
+        elif image_orientation in (4,'4'):
+            return im.transpose(Image.FLIP_TOP_BOTTOM)
+        elif image_orientation in (5,'5'):
+            return im.transpose(Image.ROTATE_90).transpose(Image.FLIP_TOP_BOTTOM)
+        elif image_orientation in (6,'6'):
+            return im.transpose(Image.ROTATE_270)
+        elif image_orientation in (7,'7'):
+            return im.transpose(Image.ROTATE_270).transpose(Image.FLIP_TOP_BOTTOM)
+        elif image_orientation in (8,'8'):
+            return im.transpose(Image.ROTATE_90)
+        else:
+            return im
+    except (KeyError, AttributeError, TypeError, IndexError):
+        return im
+
 def save_image(filename, data):
     filename = "data/images/" + secure_filename(filename)
     with open(filename, 'wb') as f:
         f.write(data)
 
     image = Image.open(filename)
-    resized = image.thumbnail((1920, 1920))
+    image = reorient_image(image)
+    image.thumbnail((1920, 1920))
     image.save(filename, 'jpeg')
     return filename