From ac9ba1d0f69e99f32bc20629a3cc41b88d484773 Mon Sep 17 00:00:00 2001
From: Johannes 'josch' Schauer <josch@mister-muffin.de>
Date: Wed, 18 Jul 2018 00:03:31 +0200
Subject: [PATCH] handle monochrome png properly

---
 src/img2pdf.py                |   8 ++++++--
 src/tests/output/mono.png.pdf | Bin 958 -> 958 bytes
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/img2pdf.py b/src/img2pdf.py
index 210b2d7..29522ba 100755
--- a/src/img2pdf.py
+++ b/src/img2pdf.py
@@ -422,7 +422,9 @@ class pdfdoc(object):
         if imgformat is ImageFormat.CCITTGroup4:
             image[PdfName.BitsPerComponent] = 1
         else:
-            if color == Colorspace.P:
+            if color == Colorspace['1']:
+                image[PdfName.BitsPerComponent] = 1
+            elif color == Colorspace.P:
                 if len(palette) <= 2**1:
                     image[PdfName.BitsPerComponent] = 1
                 elif len(palette) <= 2**4:
@@ -451,7 +453,9 @@ class pdfdoc(object):
             else:
                 decodeparms[PdfName.Colors] = 3
             decodeparms[PdfName.Columns] = imgwidthpx
-            if color == Colorspace.P:
+            if color == Colorspace['1']:
+                decodeparms[PdfName.BitsPerComponent] = 1
+            elif color == Colorspace.P:
                 if len(palette) <= 2**1:
                     decodeparms[PdfName.BitsPerComponent] = 1
                 elif len(palette) <= 2**4:
diff --git a/src/tests/output/mono.png.pdf b/src/tests/output/mono.png.pdf
index af98641973dd36ea93f08d2c1a4b5c840cf821f2..c773715d7c5cf883d5e6bc77f815103e238df04e 100644
GIT binary patch
delta 20
ccmdnTzK?xFGb5wn<Q7I7M#Ieq8UHc@07+;D>Hq)$

delta 20
ccmdnTzK?xFGb5wL<Q7I7MvKh{8UHc@07>Qs_y7O^