Extract frame info read/write to new class.

1 files changed, 45 insertions, 0 deletions

diff --git a/src/lib/frame_info.h b/src/lib/frame_info.h
new file mode 100644
index 000000000..a5a22bd9e
--- /dev/null
+++ b/src/lib/frame_info.h
@@ -0,0 +1,45 @@
+/*
+    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 "film.h"
+#include <dcp/frame_info.h>
+#include <memory>
+
+
+class J2KFrameInfo : public dcp::J2KFrameInfo
+{
+public:
+	J2KFrameInfo(dcp::J2KFrameInfo const& info);
+	J2KFrameInfo(uint64_t offset_, uint64_t size_, std::string hash_);
+	J2KFrameInfo(std::shared_ptr<InfoFileHandle> info_file, Frame frame, Eyes eyes);
+
+	void write(std::shared_ptr<InfoFileHandle> info_file, Frame frame, Eyes eyes) const;
+
+	static int size_on_disk() {
+		return _size_on_disk;
+	}
+
+private:
+	long position(Frame frame, Eyes eyes) const;
+
+	static constexpr auto _size_on_disk = 32 + sizeof(dcp::J2KFrameInfo::offset) + sizeof(dcp::J2KFrameInfo::size);
+};
+