# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1441756326 -7200
# Node ID 579461e260e67b085a83e308fd7040a5d52a85af
# Parent  4e6369d60870699ec88401dbdf74e24b1c0e0f2a
Use EXIF data for automatic rotation.

diff -r 4e6369d60870 -r 579461e260e6 optimiser.py
--- a/optimiser.py	Wed Sep 09 00:30:58 2015 +0200
+++ b/optimiser.py	Wed Sep 09 01:52:06 2015 +0200
@@ -2,6 +2,7 @@
 
 from array import array
 from itertools import combinations
+import EXIF
 import PIL.Image
 import sys
 
@@ -60,8 +61,9 @@
     input_filename, output_filename = sys.argv[1:3]
     rotate = "-r" in sys.argv[3:]
 
+    x = EXIF.process_file(open(input_filename))
     im = PIL.Image.open(input_filename)
-    if rotate:
+    if rotate or x["Image Orientation"].values == [6L]:
         im = im.rotate(270)
     w, h = im.size
     height = (width * h) / w