From 3584157f1c3891259da0f86ea933f390449ad657 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Fri, 15 Mar 2019 22:37:47 +0000
Subject: Give a better error when FFmpegImageProxy fails to decode an image
 that was passed in without a filename.

---
 src/lib/ffmpeg_image_proxy.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/lib/ffmpeg_image_proxy.cc')

diff --git a/src/lib/ffmpeg_image_proxy.cc b/src/lib/ffmpeg_image_proxy.cc
index 3548117ff..33c619a2d 100644
--- a/src/lib/ffmpeg_image_proxy.cc
+++ b/src/lib/ffmpeg_image_proxy.cc
@@ -146,7 +146,12 @@ FFmpegImageProxy::image (optional<dcp::Size>) const
 		e = avformat_open_input (&format_context, "foo.tga", f, &options);
 	}
 	if (e < 0) {
-		throw OpenFileError (_path->string(), e, true);
+		if (_path) {
+			throw OpenFileError (_path->string(), e, true);
+		} else {
+			/* XXX: this needs to be marked translatable after the string freeze is over */
+			boost::throw_exception(DecodeError(String::compose("Could not decode image (%1)", e)));
+		}
 	}
 
 	if (avformat_find_stream_info(format_context, 0) < 0) {
-- 
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