2 Copyright (C) 2013-2016 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/>.
21 /** @file src/lib/video_examiner.h
22 * @brief VideoExaminer class.
26 #include "video_content.h"
27 #include <dcp/types.h>
29 /** @class VideoExaminer
30 * @brief Parent for classes which examine video sources and obtain information about them.
35 virtual ~VideoExaminer () {}
36 virtual boost::optional<double> video_frame_rate () const = 0;
37 virtual dcp::Size video_size () const = 0;
38 virtual Frame video_length () const = 0;
39 virtual boost::optional<double> sample_aspect_ratio () const {
40 return boost::optional<double> ();
42 virtual bool yuv () const = 0;