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/*
Copyright (C) 2013-2021 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/>.
*/
/** @file src/lib/video_examiner.h
* @brief VideoExaminer class.
*/
#include "pixel_quanta.h"
#include "video_content.h"
#include <dcp/types.h>
/** @class VideoExaminer
* @brief Parent for classes which examine video sources and obtain information about them.
*/
class VideoExaminer
{
public:
virtual ~VideoExaminer () {}
virtual bool has_video () const = 0;
/** @return video frame rate (if known); must not be called if has_video() == false */
virtual boost::optional<double> video_frame_rate () const = 0;
/** @return video size; must not be called if has_video() == false */
virtual dcp::Size video_size () const = 0;
/** @return video length in frames; must not be called if has_video() == false */
virtual Frame video_length () const = 0;
/** @return video sample aspect ratio (if known); must not be called if has_video() == false */
virtual boost::optional<double> sample_aspect_ratio () const {
return {};
}
/** @return true if this video is in YUV; must not be called if has_video() == false */
virtual bool yuv () const = 0;
virtual VideoRange range () const = 0;
virtual PixelQuanta pixel_quanta () const = 0;
};
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