Add an advanced option to check data against the frame info file when making hashes (#2758).2758-safe-write-take2

1 files changed, 40 insertions, 0 deletions

diff --git a/src/lib/info_file_checker.h b/src/lib/info_file_checker.h
new file mode 100644
index 000000000..9b761edff
--- /dev/null
+++ b/src/lib/info_file_checker.h
@@ -0,0 +1,40 @@
+/*
+    Copyright (C) 2024 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include "digester.h"
+#include "j2k_frame_info.h"
+#include <dcp/file.h>
+#include <boost/filesystem.hpp>
+
+
+class InfoFileChecker
+{
+public:
+	InfoFileChecker(dcp::File& file);
+
+	void check(int64_t offset, uint8_t const* data, int length);
+
+private:
+	dcp::File& _file;
+	boost::optional<J2KFrameInfo> _next;
+	Digester _digester;
+};
+