2 Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/lib/video_examiner.h
21 * @brief VideoExaminer class.
25 #include "video_content.h"
26 #include <dcp/types.h>
28 /** @class VideoExaminer
29 * @brief Parent for classes which examine video sources and obtain information about them.
34 virtual ~VideoExaminer () {}
35 virtual boost::optional<double> video_frame_rate () const = 0;
36 virtual dcp::Size video_size () const = 0;
37 virtual Frame video_length () const = 0;
38 virtual boost::optional<double> sample_aspect_ratio () const {
39 return boost::optional<double> ();
41 virtual bool yuv () const = 0;