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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef DCPOMATIC_VIDEO_DECODER_H
#define DCPOMATIC_VIDEO_DECODER_H
#include "video_source.h"
#include "decoder.h"
class VideoContent;
class VideoDecoder : public VideoSource, public virtual Decoder
{
public:
VideoDecoder (boost::shared_ptr<const Film>);
/** @return video frame rate second, or 0 if unknown */
virtual float video_frame_rate () const = 0;
/** @return native size in pixels */
virtual libdcp::Size native_size () const = 0;
/** @return length according to our content's header */
virtual ContentVideoFrame video_length () const = 0;
virtual int time_base_numerator () const = 0;
virtual int time_base_denominator () const = 0;
virtual int sample_aspect_ratio_numerator () const = 0;
virtual int sample_aspect_ratio_denominator () const = 0;
void set_progress (Job *) const;
int video_frame () const {
return _video_frame;
}
double last_content_time () const {
return _last_content_time;
}
protected:
virtual PixelFormat pixel_format () const = 0;
void emit_video (boost::shared_ptr<Image>, bool, Time);
void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
private:
int _video_frame;
double _last_content_time;
boost::shared_ptr<TimedSubtitle> _timed_subtitle;
};
#endif
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