2 Copyright (C) 2012 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 #ifndef DCPOMATIC_VIDEO_DECODER_H
21 #define DCPOMATIC_VIDEO_DECODER_H
23 #include "video_source.h"
28 class VideoDecoder : public TimedVideoSource, public virtual Decoder
31 VideoDecoder (boost::shared_ptr<const Film>);
33 /** @return video frame rate second, or 0 if unknown */
34 virtual float video_frame_rate () const = 0;
35 /** @return native size in pixels */
36 virtual libdcp::Size native_size () const = 0;
37 /** @return length according to our content's header */
38 virtual ContentVideoFrame video_length () const = 0;
40 virtual int time_base_numerator () const = 0;
41 virtual int time_base_denominator () const = 0;
42 virtual int sample_aspect_ratio_numerator () const = 0;
43 virtual int sample_aspect_ratio_denominator () const = 0;
45 void set_progress (Job *) const;
47 int video_frame () const {
51 double last_content_time () const {
52 return _last_content_time;
57 virtual PixelFormat pixel_format () const = 0;
59 void emit_video (boost::shared_ptr<Image>, bool, double);
60 void emit_subtitle (boost::shared_ptr<TimedSubtitle>);
64 double _last_content_time;
66 boost::shared_ptr<TimedSubtitle> _timed_subtitle;