From 4a79e6ecbc50cac50696791274ae3402b3daa205 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Thu, 10 Sep 2015 09:52:53 +0100
Subject: Slightly better error message.

---
 src/mono_picture_frame.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/mono_picture_frame.cc b/src/mono_picture_frame.cc
index 7a863463..0a7d7a11 100644
--- a/src/mono_picture_frame.cc
+++ b/src/mono_picture_frame.cc
@@ -28,6 +28,7 @@
 #include "colour_conversion.h"
 #include "KM_fileio.h"
 #include "AS_DCP.h"
+#include "compose.hpp"
 #include <openjpeg.h>
 
 #define DCI_GAMMA 2.6
@@ -72,7 +73,7 @@ MonoPictureFrame::MonoPictureFrame (boost::filesystem::path path, int n, ASDCP::
 	_buffer = new ASDCP::JP2K::FrameBuffer (4 * Kumu::Megabyte);
 
 	if (ASDCP_FAILURE (reader.ReadFrame (n, *_buffer, c))) {
-		boost::throw_exception (DCPReadError ("could not read video frame"));
+		boost::throw_exception (DCPReadError (String::compose ("could not read video frame %1 of %2", n, path.string())));
 	}
 }
 
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