2 Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 /** @file src/lib/file_group.h
23 * @brief FileGroup class.
27 #ifndef DCPOMATIC_FILE_GROUP_H
28 #define DCPOMATIC_FILE_GROUP_H
32 #include <boost/filesystem.hpp>
33 #include <boost/optional.hpp>
38 * @brief A class to make a list of files behave like they were concatenated.
44 explicit FileGroup (boost::filesystem::path);
45 explicit FileGroup (std::vector<boost::filesystem::path> const &);
47 FileGroup (FileGroup const&) = delete;
48 FileGroup& operator= (FileGroup const&) = delete;
50 void set_paths (std::vector<boost::filesystem::path> const &);
52 int64_t seek (int64_t, int) const;
53 int read (uint8_t*, int) const;
54 int64_t length () const;
57 void ensure_open_path (size_t) const;
59 std::vector<boost::filesystem::path> _paths;
60 /** Index of path that we are currently reading from */
61 mutable size_t _current_path = 0;
62 mutable boost::optional<dcp::File> _current_file;
63 mutable size_t _current_size = 0;
64 mutable int64_t _position = 0;