From fcbdeb8dbe722c6802e3f51f3d66c2554f63d7d3 Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <james@purplerock.ca>
Date: Tue, 25 Apr 2023 15:17:45 -0700
Subject: [PATCH] Fix resampling attributeerror when Pillow < 9.1.0

---
 src/ocrmypdf/imageops.py | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/ocrmypdf/imageops.py b/src/ocrmypdf/imageops.py
index f15c7517..4f260ca2 100644
--- a/src/ocrmypdf/imageops.py
+++ b/src/ocrmypdf/imageops.py
@@ -11,6 +11,14 @@ from math import floor, sqrt
 
 from PIL import Image
 
+# Remove this workaround when we require Pillow >= 9.1.0
+try:
+    Resampling = Image.Resampling  # type: ignore
+except AttributeError:
+    # Pillow 9 shim
+    Resampling = Image  # type: ignore
+
+
 log = logging.getLogger(__name__)
 
 
@@ -116,7 +124,7 @@ def downsample_image(
     image: Image.Image,
     new_size: tuple[int, int],
     *,
-    resample_mode: Image.Resampling = Image.Resampling.BICUBIC,
+    resample_mode: Image.Resampling = Resampling.BICUBIC,
     reducing_gap: int = 3,
 ) -> Image.Image:
     """Downsample an image to fit within the given limits.