From 5c80bd735ebf02ad476c335adbb8ad9ebd8d27a6 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Mon, 24 May 2021 23:15:46 +0200
Subject: Forward-declare the right class.

---
 src/lib/decoder_factory.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/lib/decoder_factory.h b/src/lib/decoder_factory.h
index 1a39f37e2..902cf9f0b 100644
--- a/src/lib/decoder_factory.h
+++ b/src/lib/decoder_factory.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2016-2019 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2016-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -18,7 +18,9 @@
 
 */
 
-class ImageDecoder;
+
+class Decoder;
+
 
 extern std::shared_ptr<Decoder> decoder_factory (
 	std::shared_ptr<const Film> film,
-- 
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