From cf4b04c5d163a3b661f45ae8783ca1bbf9baf3ab Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <jim@purplerock.ca>
Date: Wed, 11 Sep 2019 12:56:27 -0700
Subject: [PATCH] optimize: work around pikepdf 1.6.3 limitation with indexed
 ICCbased colorspaces

---
 src/ocrmypdf/optimize.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/ocrmypdf/optimize.py b/src/ocrmypdf/optimize.py
index 2976554c..bfe027af 100644
--- a/src/ocrmypdf/optimize.py
+++ b/src/ocrmypdf/optimize.py
@@ -111,6 +111,11 @@ def extract_image_generic(*, pike, root, log, image, xref, options):
     if pim.bits_per_component == 1:
         return None
 
+    try:
+        pim.indexed  # pikepdf 1.6.3 can't handle [/Indexed [/Array...]]
+    except NotImplementedError:
+        return None
+
     if filtdp[0] == Name.DCTDecode and options.optimize >= 2:
         # This is a simple heuristic derived from some training data, that has
         # about a 70% chance of guessing whether the JPEG is high quality,