1 files changed, 2 insertions, 0 deletions
diff --git a/src/lib/image.h b/src/lib/image.h
index 23b88dd76..23c85e92b 100644
--- a/src/lib/image.h
+++ b/src/lib/image.h
@@ -75,6 +75,8 @@ public:
 		return _pixel_format;
 	}
 
+	std::string digest () const;
+
 private:
 	friend class pixel_formats_test;