From 076363d78eace78d2f5864979a72f799edd22d21 Mon Sep 17 00:00:00 2001
From: "James R. Barlow" <jim@purplerock.ca>
Date: Tue, 17 Apr 2018 13:54:34 -0700
Subject: [PATCH] Disable JPEG passthrough for Ghostscript 9.23

Seems to corrupt JPEGs involved in image masks?
---
 src/ocrmypdf/exec/ghostscript.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/ocrmypdf/exec/ghostscript.py b/src/ocrmypdf/exec/ghostscript.py
index 7292034f..e87f7193 100644
--- a/src/ocrmypdf/exec/ghostscript.py
+++ b/src/ocrmypdf/exec/ghostscript.py
@@ -132,6 +132,11 @@ def generate_pdfa(pdf_pages, output_file, compression, log,
     # git commit fe1c025d.
     strategy = 'RGB' if version() >= '9.19' else '/RGB'
 
+    if version() == '9.23':
+        # 9.23: JPEG passthrough broken for image masks?
+        # https://bugs.ghostscript.com/show_bug.cgi?id=699216
+        compression_args.append('-dPassThroughJPEGImages=false')
+
     with NamedTemporaryFile(delete=True) as gs_pdf:
         args_gs = [
             "gs",